On January 21, 1958, Caril Ann came home from school to her family's rundown, one-story frame house in the poor Belmont section of Lincoln, Nebraska into the midst of her family's massacre. After an argument with Starkweather, Caril's stepfather, Marion Bartlett, 57, and
her mother, Velda Bartlett, 36, were shot in the head. Caril's two-and-a-half-year-old baby sister, Betty Jean was clubbed to death in her bed.
Afterwards the couple prepared sandwiches and had lunch.
Starkweather hid the bodies outside and the young couple lived in the house for days. Twice relatives came by to find out why nobody from the family had been seen. Caril sent them away at the door, telling them everyone was sick. Detectives were called to investigate by Caril Ann's grandmother.
They found a note on the front door: "Stay away. Everybody is sick with the flu.
Miss Bartlett."
A search turned up the body of Marion wrapped in paper in the chicken house. Caril's mother, Velda, and baby Betty Jean were found in an outbuilding. The lovers were already long gone driving across Nebraska killing and stealing.