In the episode "The Boogeyman", Elle Fanning guest-starred as Tracy Belle, an elementary school student who is nearly murdered by child killer Jeffrey Charles, played by Cameron Monaghan.

In the episode "Empty Planet", Jamie Elman guest-starred as Kenneth Roberts, a serial bomber who goes by the alias of "Allegro", the main character from his favorite science fiction novel.

In the episode "Lessons Learned" Anthony Azizi guest-starred as Jamal Abaza, a Guantanamo Bay inmate who is a member of a terrorist organization called "Militant Islamic Society."

In the episode "Sex, Birth, Death", Jessica Tuck guest-starred as Dr. Sarah Harris, a doctor who is desperate to help stop her son's homicidal urges and fantasies.

In the episodes "The Big Game" and "Revelations", James Van Der Beek guest-starred as Tobias Hankel, a delusional serial killer who is following in the footsteps of his father Charles.

In the episode "Open Season", Jim Parrack and Jake Richardson guest-starred as Paul and Johnny Mulford, a pair of brothers who kidnap and hunt several people in the woods.