In the episode "Broken Mirror", Matt Letscher guest-starred as Vincent Shyer, an erotomaniacal stalker who abducts one of the twin daughters of Executive Assistant District Attorney Evan Davenport, played by Robin Thomas.

In the episode "Natural Born Killer", Patrick Kilpatrick guest-starred as Vincent Perotta, a professional hitman who abducts FBI agent Josh Cramer of the Organized Crime Unit.

In the episode "Derailed", Chris Bauer guest-starred as Dr. Theodore Bryar, who has paranoid schizophrenia and held several passengers hostage, including Elle Greenaway, on a train.

In the episode "Blood Hungry", Kris Lemche guest-starred as cannibalistic spree killer, Eddie Mays, and Lindsay Crouse played his mother, Mary.

In the episode "Riding the Lightning", Jeannetta Arnette guest-starred as Sarah Jean Dawes, an inmate on death row who is determined to make sure her son never finds out the truth of his parentage.

In the episode "Somebody's Watching", Katheryn Winnick guest-starred as Maggie Lowe, a serial killer and stalker who obsesses over actress Lila Archer, played by Amber Heard.