|“|| "Why can't you stay captain?"|
"I'm graduating. You know, I'm not gonna be here next year. Somebody's gotta step up and fill in the gap. It should be you."
"Yeah, well, Coach doesn't want me. I don't know if the team wants me."
"It's not up to them. It's up to you. You have to want this... Because they're gonna keep coming at you. They're gonna keep knocking you down. And you have to get back up-- you have to show them that you can get back up. Leaders don't run."
- Tyler Posey as Scott McCall
- Dylan O'Brien as Stiles Stilinski (credit only)
- Holland Roden as Lydia Martin
- Shelley Hennig as Malia Tate
- Dylan Sprayberry as Liam Dunbar
- Linden Ashby as Sheriff Stilinski
- Melissa Ponzio as Melissa McCall (credit only)
- JR Bourne as Chris Argent (credit only)
- Khylin Rhambo as Mason Hewitt
- Michael Johnston as Corey
- Pete Ploszek as Garrett Douglas
- Susan Walters as Natalie Martin
- Marti Matulis as The Outlaw
- Alexander Ward as The Enforcer
- Kevin 'ohGr' Ogilvie as The Ranger
- Joey Honsa as Claudia Stilinski
- Ross Butler as Nathan
- The title is a reference to the thought experiment known as Schrodinger's Cat, which deals with a physics concept known as superposition that discusses how seeing an object changes its reality.
- It is stated that Mason has a 4.9 GPA and that Corey has a 2.7. It was also mentioned that Corey works two jobs, though it remains unknown what these jobs entail.
- It appears that Lydia's Banshee powers are growing even stronger, as she is experiencing more premonitions that are both auditory and visual.
- During a conversation with Scott, Deaton reveals that the Wild Hunt is known for being drawn to war and mayhem.
- It is also implied that Deaton, too, has forgotten about Stiles' existence, just like everyone else who knows him.
- Jake Sullivan - erased from existence by the Ghost Riders
- Beacon Hills High School
- Lacrosse Field
- Science Laboratory
- Boys' Locker Room
- Ms. Flemming's Classroom
- Boiler Room
- Administrative Office
- Parking Lot
- Coach Finstock's Office
- Tate Ranch
- Malia's Bedroom
- Martin House
- Lydia's Bedroom
- Beacon County Sheriff's Station
- Sheriff Stilinski's Office
- Beacon Hills Animal Clinic
- Exam Room
- McCall House
- Scott's Bedroom
- Beacon Hills Preserve
- "Fire" by Barns Courtney
- The Ghost Riders ride past Liam and Scott on the lacrosse field, though the werewolves can't see them
- "Take the Lead" by Statistics
- Mason and Corey share a kiss late at night
- "Next Level" by Kylie Rothfield
- Malia and Nathan start to fall asleep after sex, but when he sees Malia's chains for the full moon, he becomes alarmed
- "Find What You're Looking For" by Flint Eastwood
- Lydia is drawn to Stiles' old locker in the hallway
- "Of the Mountains" by Dan Deacon
- Scott awakens to find he has sleepwalked into the woods where he was first bitten by Peter during sophomore year
- "Young at Heart" by Covenhoven
- Claudia brings the Sheriff dinner at the Sheriff's station, first giving him a salad before revealing that she actually brought him a burger