A weekend away visiting parents becomes a living nightmare for Alex and her best friend Marie when a deranged killer breaks in, slaughters family members and kidnaps Alex. Hiding to evade capture Marie sets off on a white knuckle pursuit to save her friend.

• UHD presented in HDR10+ proved by Director Alexandre Aja
• New audio commentary by Dr Lindsay Hallam
• An Experiment in Suspense: a new interview with Alexandre Aja
• The Man in the Shadows: a new interview with Writer Grégory Levasseur
• The Darker the Better: an interview with Cinematographer Maxime Alexandre
• The Great French Massacre: an interview with Special Effects Artist Giannetto De Rossi
• Only the Brave: Alexandra Heller-Nicholas on High Tension
• Archive 'Making of' featurette
• Archive Interview with Cécile De France
• Archive Interview with Maïwenn
• Archive Interview with Philippe Nahon
• Rigid slipcase with new artwork by James Neal
• 70-page book with new essays by Anna Bogutskaya, Prince Jackson, Stacie Ponder and Zoë Rose Smith
• 6 collectors' art cards