1x08: Baby Killers
1x07: Group Killers
1x06: School Killers
1x05: Occult Killers
1x04: Hate Killers
1x03: Sexual Killers
1x01: Family Killers
2x13: Feeding Frenzy
2x14: Creeping Terror
2x11: Surrounded
2x12: Houses of Horror
2x07: Spreading Too Fast
2x08: The Most Horrifying
2x05: Night Terrors
2x06: Under Siege
2x03: Driven Insane