If you want to introduce your children to the murder-mystery genre without scaring them or boring them, then show them this terrific film, which made instant Poirot fans of my 10 and 13 year-old kids. Albert Finney is so over-the-top that he towers over an excellent ensemble cast, and his performance became the standard that I'm sure David Suchet aspired to for many years. The opening sequence, showing the back-story of the 'Baby Armstrong' case, is very creepy and engages the viewer immediately. The sets and costumes (and even the opening credits) remind one of the grand Hollywood spectacles of the past. Sidney Lumet's direction is outstanding, as are the performances throughout. Definitely worth an annual viewing.