Despite Peter Collinson having assembled a pretty stellar cast for this adaption of the legendary Agatha Christie's story, the sum of the parts doesn't quite add up. All invited to spend the weekend at a remote island mansion, a group of ostensibly upright citizens are told that by their ethereal host (Orson Welles) that they are unlikely to survive the evening. Oliver Reed, and the triumvirate of off-form Elke Summer, Richard Attenborough and Gert Fröbe all try their best to keep it moving but the dialogue is poor and the pace of the film doesn't ever really work well enough to allow us to invest in the characters enough to care if, or why, they are going get bumped off. Herbert Lom, perhaps, raises the bar a bit but for the most part this is a mediocre remake that nobody really needed. It's fun - in a tacky sort of sense, though, and offers a bit of 1970s cinema nostalgia for big collars, vivid colours and a reminder of what we wanted back then.