Pauline Parker and Juliet Hulme

When Jesse Pomeroy was 14, he became the youngest person to be convicted of first-degree murder in the history of Massachusetts. Meg takes you through the case of this boy monster who terrorized his town in between 1871 and 1874.

Dubbed "The Speed Freak Killers", Wesley Shermantine and Loren Herzog committed numerous murders throughout the 80's and 90's in the San Joaquin area. Coni takes you through the case this week.

Andrew Kehoe was a Michigan farmer with a pessimistic outlook who thought everyone was out to get him. This mindset led him to commit one of the worst mass murders in the United States. Meg takes you through this case from almost a century ago.

Pauline Parker and Juliet Hulme were best friends turned murderers. Coni takes you through one of the most heinous cases in New Zealand's history.

All Joanne Witt wanted was to keep her 14 year old daughter, Tylar Witt, from dating 19 year old Steven "Boston" Colver. Unfortunately, Tylar and Steven were going to stop at nothing to be together. Meg takes you through the murder of Joanne Witt this week.

Bart Whitaker grew up in a loving family with loving parents who made sure he never had to want for a single thing. When his family was ambushed on the night of December 10, 2003 everyone who knew the Whitaker's was shocked to discover Bart was behind the whole thing and had been planning his family's murders for years.

When three women were abducted and murdered from the relatively safe suburb in Perth, Australia the entire country was put on high alert. This week, Meg takes you through what is described as Australia's "biggest, longest running, and most expensive investigation".

Christian Longo had one thing on his mind, money. When his world started to unravel, he did the unthinkable. Coni takes you through this case and explains how a former New York Times journalist was roped into Longo's story.

Michele Anderson and Joseph McEnroe met in an AOL Chatroom and it was all downhill from there. Meg takes you through the case this week.

Lucille Rinaldi had her whole life ahead of her when she was murdered on Christmas Eve in 1963. Coni takes you through this cold case this week.