City Under Siege: Detectives in Arizona investigate whether a 20-year-old woman could be the latest victim of an unstoppable gunman's shooting spree. (S4, ep 11)
Deadly Denial. When a gun advocate is murdered in her home, detectives suspect the victim knew her attacker. Can forensic evidence point them to the killer? (S3, ep 11)
End of the Line: When a first-year college student is raped and murdered, it takes a rookie cop to beat the odds and catch a killer. (S8, ep 10)
Flames In Paradise: Detectives encounter a rogue's gallery of suspects and outlandish leads on their way to finding the killer of telemarketing manager David Stevens. (S7, ep 10)
Sinister Secret: In rural Wyoming, a young teen is found strangled after vanishing from her group home. Relentless investigation reveals the killer's shocking identity. (S6, ep 10)
Dangerous Fortune: Police are baffled when the bodies of fortuneteller Ha Jade Smith and her daughter Anita Vo are found with white paint covering their head and hands. (S5, ep 10)
Killings In Kentucky: A respected vet, his wife and son are viciously gunned down in their home. Can detectives unearth the bitter truth behind this tragic crime? (S4, ep 10)
Hotel Homicides: In the 1990s, three woman were killed in three Iowa hotels. In the infancy of forensic testing, how did detectives bring their sadistic murderer to justice? (S3, ep 10)
Murder Down Memory Lane: When a five-year-old describes her mother's killer as a "ninja", police set out to put the surprising killer behind bars. (S8, ep 9)
Left Alone: When 13-year-old Mollie Pittman is attacked and murdered in her friend's Orlando home, investigators are left with absolutely no clues to the killer's identity. (S7, ep 9)