Two warring elderly brothers and their respective heirs are determined that each will outlive the other in an attempt to hold onto the family fortune, and will stop at nothing even murder to achieve their goal.bryan forbes' riotous black comedy, based on the 1889 novel by robert louis stevenson and lloyd osbourne, stars some of the greatest talents of the day, including peter sellers, michael caine, peter cook, dudley moore, tony hancock, ralph richardson, nanette newman and john mills.extrashigh definition remasteroriginal mono audiothe behp interview with bryan forbes 1994, 102 mins an archival audio recording, made as part of the british entertainment history project, featuring the celebrated filmmaker in conversation with roy fowleraudio commentary with film historians josephine botting and vic prattbox of delights 2018, 21 mins award winning actor nanette newman talks about the wrong box and her work with husband bryan forbesbox cutting 2018, 10 mins a new interview with assistant editor willy kemplenchasing the cast 2018, 11 mins second assistant director hugh harlow recalls his experiences on setoriginal theatrical trailerimage gallery promotional photography and publicity materialnew and improved english subtitles for the deaf and hard of hearing