Three cases of teachers crossing the line with students.

S12/EP1 Nicholas Godejohn speaks exclusively to Oxygen’s “Killer Couples” about the aftermath of the murder of his girlfriend’s mother Dee Dee Blanchard. Godejohn talks about the development of his relationship with Gypsy Rose Blanchard and what led him to murder Gypsy’s mother. People of the community where Gypsy and Dee Dee lived also speak about how they perceived the mother and daughter upon their arrival to town.

Authorities say Steven Walter Pladl has apparently killed his daughter/wife, their baby and her adoptive father.

Ashley Bemis, 29 was sentenced to county jail after posed as a firefighter’s wife in order to steal thousands of dollars in donations. Johnny Bobbitt, Mark D'Amico, and Katelyn McClure allegedly raised over $400,000 based on a false story.

Oxygen's two-hour special event The Disappearance of The Millbrook Twins airs Saturday, November 23rd at 7/6c..

Oxygen's special on Sheila Davalloo airs Sunday, December 1st at 6/5c.

S1/EP1 Watch surveillance footage of serial killer Israel Keyes abducting a woman from a coffee stand.

Ron brought Justin DeWitt's murder for hire plot to police despite his bad relationship with North Liberty law enforcement. The fact that he spoke with a relatively new detective helped, he said. Still, police would need some sort of verification if they were to trust Robi.