Three cases of teachers crossing the line with students.

S1/EP1 Listen to serial killer Ed Kemper explain why he murdered his own mother and "humiliated" her corpse.

S1/EP2 Charles Parker's mother, Jacqueline, says that six weeks after her son's disappearance, she heard preachers tell the story of Joseph and the well several times in one day. The next day, Charles' remains were found in a well.

S12/EP1 Nicholas Godejohn discusses his "dark side" in an exclusive interview with "Killer Couples." In 2015, Godejohn and his girlfriend at the time, Gypsy Rose Blanchard, executed the murder of Gypsy Rose's mother, Dee Dee Blanchard. Godejohn was later convicted of first-degree murder and sentenced to life in prison, while Gypsy Rose pleaded guilty to second-degree murder and is currently serving a 10-year sentence.

These 4 teachers were caught having scandalous relations with their students outside of the classroom.

The marriage between Donna Roberts and Robert Fingerhut seemed happy, but secrets bubbled beneath the surface, eventually erupting in a shocking murder.

S12/EP1 Oxygen's special on the Gypsy Rose Blanchard and Nick Godejohn story airs on Saturday, July 13th at 7/6c.

A young mother of two on her way to a birthday party is gunned down on the side of a rural highway. The ensuing investigation reveals fraying within a tight-knit family. Who wanted Beck Lynne Dillard, and what did law enforcement uncover?