Sheldon Jin was a police detective with the Chicago Police Department and was the assigned communications specialist for the Intelligence Section. He was portrayed by Archie Kao.
Quick Answers
Who was responsible for Sheldon Jin's death in Chicago PD?
What was Sheldon Jin's role in the Intelligence Section of the Chicago Police Department?
Did Hank Voight have any involvement in Sheldon Jin's death?
Biography[]
Jin was the communications specialist for the Intelligence and would do a lot of the surveillance, trackers, wiretaps and camera work.
Season 1[]
In Stepping Stone, Jin first appears asking Erin Lindsay and Jay Halstead if they've seen Voight yet. Later, he tells Sgt. Voight that the pods showed something off the side of the road. During a confrontation on the Dan Ryan, Voight asks if it was on camera; Jin confirms but says it’s no longer available. Voight pats him on the back, satisfied, and informs the team about a drug dealer they’re targeting. Voight warns them to keep everything in-house and not go over his head.
After a failed mission, Jin asks Halstead if his transmitter is okay. Halstead hands it over, apologizing. Later, Alvin Olinsky and Adam Ruzek ask Jin for a radio transmission. Instead, Jin gives them something different, explaining it’s because they keep breaking transmissions. Alvin takes the keys and orders Jin to provide one, which he does but asks for it back.
In Wrong Side of the Bars, Jin finds a video of Antonio’s son, Diego tied up and being threatened by kidnappers. He shows it to Antonio and the unit. Adam notes the wallpaper is different, prompting the team to focus on files related to Pulpo and Ernesto. Jin helps organize them, but when Voight questions him about the video, he only gives vague answers. Voight thanks him, and Jin continues searching. He later informs Voight about a call from Erica Gradishar, which Voight plans to return, but Jin insists it sounded urgent. Jin also tracks a cellphone call to a union station.
In Chin Check, Jin pings Michael Ganz's phone, earning a compliment from Halstead. The calls reveal Ganz contacted Bradley Milner. During the sting operation, Jin monitors from a van, wearing headphones and connected to his laptop, while most of the intelligence team is with him, except for Alvin and Antonio. As Alvin is in a car with Ganz, Jin informs the team they’ve lost audio and tracking, but soon regains it, tracking Ganz just a few meters away. Later, Jin joins the team at the district to celebrate the arrest of Ganz and the prevention of the cop-killing bullets.
In Now Is Always Temporary, Jin would find out that Nadia DeCotis lied about her relationship with Dean Masters from there texts. Sheldon then shows the unit pod footage of the van Nadia described, which turns out to belong to the Tabernacle of Divinity. Jin follows up by checking new commercial property leases and discovers that Glenn Ward is associated with a foreclosed chemical building.
In Thirty Balloons, Jin uncovers information about a girl, Amber Morris, suspected of carrying drugs, and shares it with Antonio. He reveals that four tickets were purchased and shows footage of Amber and her friends, all potential mules. Later, Jin provides the team with the girls' addresses. At a meeting on the Collins brothers, involved in a drug smuggling operation, Jin suggests they’re using throwaway phones, especially since Amber has been caught. Voight tells the team to keep searching. Jin later informs Erin he’s tracked Brendan Collins' van. Erin asks where, and Jin checks in with her before giving her the address. While the unit drives, Jin monitors the van's location and updates them. He traces calls from Brendan's phone, finding two numbers: one to a prepaid cell found in a dumpster, the other to Ryan Porter, who may be helping Sean Collins.
In Conventions, Jin hands out files on the Riverwalk killer's victims before attending a meeting where he mentions that none of the victims' DNA matched. The team goes undercover at the Riverwalk, with Jin and Voight in a van. Jin tries to make small talk, but stops when Voight gives him a look. Voight then asks Jin to improve the image quality on their monitor, revealing a man in a hoodie matching the killer's description. After they catch the suspect, Theo Mitchell, they learn he's just a pickpocket but still take him in for questioning.
Odafin Tutuola and Amanda Rollins from New York offer their analysis on the case. Jin is tasked with looking into a trade show that might link the killer to a suspect. While reviewing the convention list with Antonio and Adam, Jin joins in on a joke about Det. Rollins' looks. They find a man, Jeffrey Baker, on the convention list, and Jin and Burgess track him down to Voight's office, where they discover a new suspect, Neil Vance. Jin finds that Vance was in both New York and Chicago during the murders and rapes. Jin credits the success to the team but acknowledges Burgess' key role.
In The Price We Pay, Jin shows Halstead and Lindsay footage of the Fitori murder, but it’s too dark to make anything out. They decide to check building cameras for more clarity. Later, Jin updates the unit, saying he’s getting closer to identifying the driver of the van linked to Frank Fitori’s murder. Erin tells Voight that Jin is downloading the footage, and they join him when the download completes. However, Voight asks Jin to step out of the room, which he does.
Erin later approaches Jin and instructs him to delete the footage, but Jin reveals he already deleted it hours ago, which Erin is pleased to hear.
Jin goes to Antonio to tell him that a body was just found in the river.
In Different Mistakes, Jin informs Halstead that Lonnie Rodiger used his credit card at a toy store, and Halstead asks him to text the address. Jin then reports that he downloaded all nearby in-progress and service calls, which included reports of three suspicious vehicles. One came back as a ghost, so he ran the plate and discovered it's back in Chinatown, likely at another gambling den. Before leaving, Voight tells Jin to stop "playing around."
Halstead later reveals that one of the people in the gambling den was a cop, surprising Jin. They learn it’s Jimmy Shi, a detective with his own unit.
At a meeting with Shi's unit, Voight tells Jin to show a new member of Intelligence, Mia Sumners around while the others work the case. As everyone gears up, Jin warns Alvin to be careful and chats with Halstead, Dawson, and Atwater.
While at Jin’s workspace, Mia tells him she’s not a bad person, but Jin responds indifferently. Halstead enters, and Mia leaves, saying Voight probably doesn’t care. Halstead thanks Jin for tracking Rodiger’s credit card, but Jin warns him that if Halstead's wrong, they'll both be in trouble.
In A Material Witness, Jin, Adam, and Kim are mapping out locations where kids steal items to give to Latin Priests. Jin hands Kim a tracker, cautioning her to be careful with it. As Adam and Kim leave, Halstead arrives. Jin informs him that Lonnie made a purchase at Home Depot, buying a two-person tent, a kerosene lamp, and bug spray. Halstead assumes Lonnie is going camping, but Jin adds that Lonnie also bought rope and duct tape.
Voight then confronts Jin, demanding to know what he’s been helping Halstead with. Jin admits he’s been assisting Halstead in tracking Lonnie Rodiger’s credit card.
In At Least It's Justice, Jin tries to shut his workspace gate when Halstead asks for Lonnie Rodiger's homicide file, warning that helping him could get him kicked out of Intelligence. He recalls how Erin had him track the serial number of a body found in a car trunk, using an artificial hip to identify the victim faster than a DNA test. Voight chimes in, saying it’s good to see Jin back on the job and not doing personal favors. Later, Jin tells Voight in the break room that they matched the artificial hip to Dr. Richard Elliot, a missing DNA consultant known for his work putting criminals behind bars. Jin then updates Voight with a list of license plates connected to stolen cars, noting that about 30 minutes ago, police spotted a Mustang with one of the plates in a convention center parking lot. He also tells Antonio that during the search at a salvage yard, investigators found meth, weapons, and a CD showing lawyer Caroline Burton and Jacob Sims having sex.
After Halstead is cleared of Lonnie Rodiger’s murder, Jin comes to him and says he never doubted him.
In Turn the Light Off, Jin shows the team security footage from a robbery, but the crew stays out of frame and faces away from the cameras, leading everyone to suspect it was an inside job.
Later, Jin attends a meeting with Voight, where Adam and Alvin report that Lukas Perko was killed by being set on fire in his car. Alvin hands over Perko's phone, which Jin examines. He discovers that Perko had received 11 calls from Statesville Prison.
Voight directs Jin to look into Miguel Ortega, urging him to check out all recent contacts Ortega has made. Jin reports that Ortega had been visited nine times and made four calls to his associate, Rolo Ramirez. He shows pictures of Ramirez’s associates, and Adam recognizes Gustav Munoz as the person who killed Perko.
In the next meeting, Voight reveals they plan to disguise one of their female officers as a hooker. To everyone’s surprise, Burgess volunteers. Voight teases Erin, saying Burgess beat her to it, and Erin jokes that she’s fine with letting Burgess step up. Voight, however, jokes that Erin wouldn’t want anyone to see her in a dress. Erin responds that no one would want to see that, but Jin quickly jumps in, saying it’s not true, adding that Erin is always too self-deprecating. The room goes silent, and Jin realizes his mistake, quickly excusing himself to leave.
Later, Jin helps put a wire on Burgess, but the equipment fails. He says it will take time to fix, but Voight insists they don’t have that luxury. Burgess, unfazed, decides to just call them when she spots Ramirez.
In 8:30 PM, Voight sends Jin to check out a second bomb in a car that needs to be dismantled. At the scene, Jin sees the timing device set to "8:30 PM." He heads to the hospital to update the team, revealing that they found a print on the device belonging to a man named Paul Watts. Jin gives them Watts' address, saying they already have a warrant. Voight instructs him to hold off on telling anyone else for five minutes and tells Atwater to secure the perimeter. Once Atwater leaves, Jin shares his theory that the bombers made a mistake, as the bomb was set to detonate at 8:30 PM. Voight tells the team to keep pushing forward and not slow down.
After discovering Watts dead in his apartment, Voight orders Jin to pull all records of Watts' purchases. Jin finds that Watts had been trolling antigovernment group websites and compiling a list of people he’d contacted. He shows the unit photos of these individuals, and Alvin recognizes one of them. Voight shares details about Patrick Vaughn’s conversation, including a mention of another man, Ted Powell. Jin locates Powell and shows the team a photo of him. Voight recognizes Powell from a crowd outside the hospital. Voight tells the unit to focus on Powell’s father.
Jin continues his research and uncovers a video Powell posted on an antigovernment site. The video shows Powell declaring war on the police and fire departments for what happened to his family. Jin then digs into Ryan Wilcox, an associate of Powell, and discovers he owns a garage in an industrial area. Voight tells Jin to stay put while the team checks it out. Later, Voight calls Jin for an update on a van Powell is driving, purchased by Ryan Wilcox. Jin texts a photo and plate number to the team and informs them that the bomb squad is on their way. Voight asks when they’ll arrive, and Jin reports they’re three blocks away.
Finally, Jin is in the hospital waiting room with the unit, anxiously awaiting news about Burgess’s niece, Zoey. Dr. David Arata emerges and informs Burgess that Zoey will make it, though her recovery will take some time.
In My Way, Jin is with the Intelligence unit when a van holding Pulpo arrives. As Pulpo talks with Gustav Munoz, Jin monitors the conversation on his computer, listening in. Pulpo reveals their plan to use Antonio as a decoy, pretending to be a cartel member sent by Pulpo to get close to Munoz. Later, the unit discusses whether or not they can trust Pulpo, with Antonio getting frustrated and leaving. As the team gears up, Voight pulls Jin aside to have a private conversation. Voight asks Jin to keep an eye on Mia Sumner and report anything suspicious she does.
Meanwhile, Jin is seen at a café, where he meets with Edwin Stillwell, revealing he’s been working as a mole for Stillwell. Stillwell praises Jin’s work but asks for a more detailed report on Voight. He also inquiries about Jin's father, to which Jin responds that he’s doing much better before leaving the meeting.
In The Docks, While everyone is at the hospital with Antonio, Jin is in Voight's office, looking for any dirt on him. He plugs a flash drive into Voight's computer and begins downloading everything. When Platt walks in and questions him, Jin lies, claiming he's just installing new software on all the computers. Platt buys it, and as she leaves, the download completes.
Jin later informs the unit that a vehicle with a dead man inside has been found, likely connected to Pulpo.
Stillwell meets Jin at the same café and asks for an update. Jin hands him a flash drive, revealing that he downloaded Voight’s reports and emails. Stillwell demands more information or else Jin’s father will pay the price. He takes the drive and leaves.
Voight confronts Jin and asks if the pods have anything on Pulpo. Jin says no, then shifts the conversation to Sumner. Jin hands over a folder containing records of all the calls Sumner made, lying that she called Edwin Stillwell three times.
Jin then tells the unit that Pulpo's girlfriend used a fake ID and credit card to purchase a vehicle, which he is now tracking. Just as he's sharing this, Voight informs Sumner that she's being transferred out of the unit and needs to pack her things.
Later, as the unit investigates a Russian nightclub, Jin tells them he's having trouble with some emails they found because they’re in Russian.
In A Beautiful Friendship, Jin is on the phone with Edwin Stillwell when Erin asks him for a favor. Later, Jin nervously hands Erin a hard drive with the requested information. He then meets with Stillwell, revealing Erin asked for blueprints to a jewelry market. Stillwell demands more details, threatening his father. Jin nervously meets Voight at the Silos and admits Stillwell is blackmailing him over his father's debt. Voight is furious but reminds Jin he works for him. After the case is over, Jin is seen downloading files and telling his father to leave Chicago. He places the flash drive in an envelope, visibly anxious. At the Silos, Jin is found dead, and Voight and Stillwell exchange tense looks.
Season 2[]
In Call It Macaroni, Voight is asked in a meeting if he had anything to do with Sheldon Jin's death. Before leaving, Stillwell tells Voight to stay reachable. Jay Halstead receives an envelope with the same flash drive Jin had. He shows it to Erin, then views the contents. Halstead brings the envelope to Voight, who confronts Stillwell with evidence linking him to Jin's murder. Stillwell threatens to drag Voight down if he moves forward, suggesting the murder be written off as another casualty in Chicago. After meeting Jin's parents, Voight decides what to do. Stillwell is later arrested for Jin's murder while on a date, with Voight watching from a distance. Voight then gives Jin’s father money from his safe to pay off his gambling debts.