The 1948 Alfred Hitchcock film filmed in long takes and featuring a murder hidden in a chest is Rope.
The story follows Brandon Shaw and Philip Morgan, two young men who strangle their former classmate David Kentley and conceal his body inside a chest. They then hold a dinner party over the chest, inviting David’s relatives, fiancée, and former teacher while daring themselves to maintain their secret.
Hitchcock designed the film to appear as one continuous take, matching the action’s near-real-time progression. The cameras of the period could not record a feature-length shot, so the film was assembled from several long takes, generally limited by the length of a film magazine. Hidden cuts were disguised through camera movements and objects passing close to the lens.
Rope was adapted from Patrick Hamilton’s 1929 play, which was loosely inspired by the Leopold and Loeb murder case. It is also notable as Hitchcock’s first feature filmed in colour. The film is not technically one uninterrupted shot, despite its famous visual illusion.