Sleepwalking turns deadly in Hulu's original documentary, Dead Asleep.

Randy Herman Jr.'s escape to paradise to start a new life quickly turned into a nightmare when he accidentally killed his roommate, 21-year-old Brooke Preston, in his sleep. Hulu's new documentary, Dead Asleep, follows Randy's frightening true story and asks the question: "Did a remorseful Randy really commit a brutal murder in his sleep, or was it a convenient cover story?"