True-blue Agatha Christie fans know better than anyone that the creator of Miss Marple and Hercule Poirot did not always write crime-solving procedural. Endless Night, published in 1968, is a perfect example of the moody, psychological thriller Christie sometimes explored, particularly in the late years of her career. This 1972 adaptation, scripted and directed by seasoned British filmmaker Sidney Gilliat, is indeed a strange duck: a compelling tale of small, unsettling phenomena and events, but with no defining mystery, no apparent crime to pull the details together--not until quite late in the story, that is. Hayley Mills and Hywel Bennett, partnered together in several films (The Family Way, Twisted Nerve) during the 1960s and '70s, play an American heiress and an underemployed London chauffeur who marry and move into a dream house designed for them by a world-class architect (Per Oscarsson). In short order, things begin to get mighty weird. A crazy old woman stomps around the couple's property, whispering ambiguous warnings. The bride's nuisance of a sister (Britt Ekland) moves in, and a handful of disapproving relatives keep popping up to belittle the hero. Where this is all leading is entirely unexpected--Christie and Gilliat really have us falling without a parachute for a while--yet it's exciting and tragic all at once. Nice performances all around, with special admiration for Oscarsson's role as the dying architect.