While he was a deputy for the sheriff's department, he encountered several supernatural predicaments but didn't believe in it. They ranged from encountering Ennis, questioning Chris Argent about a body, and finding a mutilated Julia Baccari.
His wife, Claudia, was sick with frontotemporal dementia which deteriorated her mental state.
While at the scene of a wreck, a woman who was critically injured told Stilinski that if he wanted to see his wife, he needed to go now. Instead, he stayed with the dying woman. He arrived at the hospital to find his wife died just before he got there. He'd lost the chance to say goodbye. (Alpha Pact)
Only after his son becomes involved with the supernatural and tries to explain it to him did finally start to believe in it. Since then, he has been a pivotal, and at times reluctant, ally of Scott's Pack.
He learns about the supernatural through Stiles and nearly becomes a sacrifice of the Darach.
He becomes frustrated with the cover ups that are required with his son's and friends incidents.
Stilinski and Parrish enter the station as they go over a recent case, his wife waits for him in his office. He asks if she's happy, to which she replies always, pulling her in closer as they kiss. (Read More...)
Stilinski informs Scott and Lydia that "Stiles" is not a thing, but a person. His father was an army engineer and he went by the name of Stiles. Stilinski denies Scott's request to see Elias as he would be no help to them. (Read More...)
Stilinski grants Lydia permission to search his house for any possible relics of Stiles. He tells her that he couldn't sleep last night, he got up to do some paper work but he stubs his toe on an old baseball bat, without thinking, he yelled out Stiles' name. (Read More...)
The Sheriff has no clue how the jeep ended up in the school parking lot, he says the vehicle was a junker back in the day, he doesn't understand who would want it now. (Read More...)
Stilinski refuses to acknowledge the possibility that Stiles is his son and that he was taken by the Ghost Riders. He believes the person Scott heard on the radio could've been the result of signal crossing. (Read More...)
Stilinski discovers what he believes to be Stiles' bedroom. He asks Claudia why it was sealed off. He begins to think that maybe what Scott and Lydia have been telling him was true. (Read More...)
Stilinski tells the pack that he has a son, his name is Mieczyslaw Stilinski but they call him Stiles. He remembers everything about his son, anything from his first time behind the jeep to him dragging Scott into the woods. (Read More...)
He is briefly reunited with Stiles before going to give him cover so that Stiles could escape. Later, he saves him from the conjured up Claudia. (Read More...)
- “Not exactly, or no? Because when it comes to law, there's a fairly large divide between not exactly and no. Like, if 'not exactly' were sitting in this chair, then 'no' would be somewhere in the middle of the pacific ocean, drowning next to my career. So what's it gonna be, huh? Not exactly or no?” — Sheriff to Jackson Whittemore in Venomous.
- “Are you crazy?” — Sheriff to Stiles Stilinski in Fury.