Diana — He Knows You're Alone Character Profile

About Diana

Amy's young sister who is temporarily under Amy's care while her parents are away. She attends a birthday party earlier in the day, and her presence briefly separates Nancy from Amy during the killer's attack.

Character Facts

Played by

Dana Barron

Appears in

He Knows You're Alone (1980)

Role

Supporting

More characters from He Knows You're Alone

• Marvin (Don Scardino)
• Amy Jensen (Caitlin O'Heaney)
• Nancy (Elizabeth Kemp)
• Ray Carlton (Tom Rolfing)
• Det. Frank Daley (Paul Gleason)
• Det. Len Gamble (Lewis Arlt)
• Gamble's Bride (Dorian Lopinto)
• Joyce (Patsy Pease)
• Girl in Car (Debbie Novak)
• Boy in Car (Russell Todd)
• Ruthie (Robin Lamont)
• Phil (James Carroll)