Grace Parker's adoptive mother, Sara Packer, allegedly watched her boyfriend Jacob Sullivan beat and rape her before they left her to die in the attic. When she was found still alive the next day, Sullivan strangled her.
Terance and Tina Black were accidentally sent information about a mechanic who witnessed their robbery of a marijuana dispensary in Denver, Colorado. They then tracked down and killed him.
Aubrianne Moore picked up her daughters from school and took them to lunch shortly before she killed them with a bolt-action hunting rifle, officials say.
Teresa Lynne Roth has been charged with first-degree child cruelty after allegedly subjecting her 5-year-old boy to years of unnecessary medical treatments.
David and Louise Turpin's children, ranging in age from 2 to 29, were malnourished and appeared much younger than they actually were when police arrived last year to find some shackled to beds.
Krystal Lee Kenny, the Idaho nurse who had an affair with Kelsey Berreth's fiance, Patrick Frazee, provided eerie details about the gruesome crime scene she helped clean up.
Robert Earl Kailiala Saladaga also rubbed hot sauce into the face of one of girlfriend Sabrina Emerick's children and held a pillow over his face as a form of punishment, according to police in Greenville, South Carolina.