Detective Alvin Olinsky works undercover for the Chicago Police Department Intelligence Unit. He is partners with Officer Adam Ruzek.
Alvin has a rocky relationship with his partner,Officer Adam Ruzek. This is largely due to Ruzek's inexperience and cockiness. However, the two genuinely care for one another.
At one point, Alvin had served in the military as part of a Special Response Team in Italy. It is revealed that he had seen some action in Italy while serving there.
Later he joined the CPD working alongside Sergeant Hank Voight, Jimmy Shi, and Ruzek's father. Alvin and Voight share a close partnership and friendship. Alvin has an unwavering loyalty to Voight and will do whatever he asks off the books.
He is an expert at undercover stakeouts. His dedication is evident by the fact that he wears adult diapers to make sure he doesn't miss his targets. This began after a particularly nasty incident where a B&E team got away when he went to relieve himself.
It is revealed that Alvin has an estranged relationship with his wife, who has made him move into the garage. Despite the tension in his marriage, Alvin still maintains a close relationship with his daughter, Lexi.
When Lexi is blamed for having marijuana in her locker (stored there by a boyfriend), Alvin is quick to help his daughter out. Even though she is suspended from school, the two have a father/daughter dance in the garage.
When an ill-fated party ends in a gang member's shooting death, Lexi is the only witness. Alvin tries to prevent Lexi from becoming a witness as it would endanger her life. However, when the shooter refuses to confess, Lexi volunteers.
|Season 2 Appearances|
|"A Problem House"||"Prove It"||"Defcon 1"||"A Nuisance Call"||"A Power Move"|
|"Joyriding"||"No Regrets"||"Rhymes With Shout"||"You Will Hurt Him"||"Not Like This"|
|"Shoved In My Face"||"Out With A Banng"||"Tonight's The Night"||"Virgin Skin"||"Keep Your Mouth Shut"|
|"A Rocket Blasting Off"||"When Things Got Rough"||"Until Your Feet Leave the Ground"||"A Heavy Weight"||"A Dark Day"|
|"One More Shot"||"Real Never Waits"|