Acquaintances of Donna Roberts recall her "flirtatious" and "bubbly" personality, which she brought with her to Miami, with her first husband, William Raymond.

Watch the two-hour special 'Killer Couples' episode now.

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

County Sheriff Jim Arnott says people of Springfield learned to be more cautious in who they help after the Gypsy Rose case. Friends of the Blanchards learned "not to take everything at face value anymore."

Bobby Godejohn says he believes Gypsy Rose used his son, Nick, the way she learned to manipulate people from her mother, Dee Dee. He is overcome with emotion, reading a birthday card Nick sent him from prison

Satanic cults, lonely hearts killers and a married couple who got their kicks from sexual torture made it to the big screen in these disturbing films.

Nick Godejohn says he has grown spiritually in prison since being convicted of Dee Dee Blanchard's murder. He blames no one else, and hopes one day to be friends with Gypsy Rose again.

Gypsy Rose Blanchard and Nick Godejohn debated several methods of killing Dee Dee Blanchard, Godejohn said in a revealing interview.

Nicholas Godejohn speaks out about alter egos he explored with Gypsy Rose Blanchard in a new episode of Oxygen’s “Killer Couples.”

Charles Starkweather and Caril Ann Fugate were only teens when they embarked on a murderous journey that terrified the nation.

Nicholas Godejohn says he was lonely and isolated as a child.

Before they conspired to murder her mother, Gypsy Rose Blanchard and her boyfriend, Nicholas Godejohn, spun an elaborate series of BDSM-related fantasies online.

Legal analyst Nancy Grace and psychiatrist Dr. Marc Feldman weigh in if the sentences of Gypsy Rose Blanchard and Nicholas Godejohn were fair.