An American in England decides to go and stay in an old country house with his friend Casper Femm (Peter Bull). Upon his arrival he is informed of Casper's untimely death, and is then introduced to the rest of the family, but as evening draws on members of the family begin to get murdered and the murderer must be found before there is no-one left alive.
Alternative feature presentations: the black and white US theatrical version (1963, 87 mins); the cut-down 'A' certificate UK version (1966, 84 mins); and the complete uncut colour version (87 mins) Audio commentary with horror and fantasy authors Stephen Jones and Kim Newman
Not Too Spooky (2018, 29 mins): an appreciation by Jonathan Rigby, author of English Gothic: Classic Horror Cinema 1897-2015
House and Castle (2018, 8 mins): researcher Paul Frith discusses The Old Dark House, Hammer Films, and Eastmancolor
Isolated music and effects track
Original theatrical trailer
Image gallery: on-set and promotional photography, poster art and promotional materials