Absent Teacher: In 1993, a primary school teacher went missing after her first day at a new job. Over the next two months, investigators pieced together the sinister puzzle. (S7, ep 8)
No Good Deed: In 2005, a 28-year-old photographer and college student was found murdered in his Texas apartment. What could have led a killer to his door? (S7, ep 7)
Eye For Murder: In December 1990, 21-year-old wife and mother Dina Kichler was found murdered in her Florida home. Investigators had to race to track down her killer. (S7, ep 6)
Deadly Desire: Days before Thanksgiving, a small Philadelphia suburb is rocked by the murder of 67-year-old Alice Hufnagle. Who could commit such a random crime? (S7, ep 5)
Barefoot Homicide: Philadelphia investigators bring to light the obsession that drove a killer to strangle maths student Deborah Wilson to death in a computer laboratory. (S7, ep 13)