Jack And Henry

Jack Havig's mother, bathing Jack as a baby, hears a baby scream in the bedroom so she carries Jack through and sees another baby, naked and wet, crying in Jack's crib. In surprise, she drops Jack who vanishes as he falls. He has responded to falling by space-time travelling to the safety of his crib a few minutes earlier. 

Henry DeTamble's mother is driving a car with six year old Henry sitting beside her. When she hits the back of a truck, a sheet of metal from the truck crashes through her windshield, decapitates her and would also have killed Henry who, however, is found naked beside the road although his clothes have remained in the car. No one understands. Like Jack, Henry has time travelled to safety.