Great adaptation of the Christie novel. Surprising attention to authentic period details for the time (Many films of the mid-1970s-early 80s that try to do 1920s-early 30s look far too mid-70s-early 80s for my liking, so expected the worst here, and was gladly proved wrong)The costumes and sets are very well done. I liked this production very much  largely due to the adorable Francesca Annis' portrayal of a carefree bright young Lady "Frankie" and James Warwick's charming Bobbie. The pair would go on to portray Christie's Tommy & Tuppence, which is funny as some contemporary book critics compared Frankie and Bobby to her earlier characters of Tommy & Tuppence. The supporting characters were equally well done  the over the top Mrs. Rivington (acted by Miss Marple-to-be Joan H.) and "Badger" is played perfectly as the post WWI, "Bertie Wooster type."