Very disappointing.
Nobody expects film based on Sidney Sheldon's book to be come art-house masterpiece but at least it could be made into enjoyable crime movie like Death on Nile. Well it was not. Despite the rather famous director (Young is not Fellini of course but most his previous films were enjoyable eye-feasts; would that be a spy adventure (2 Bond movies), eurowestern (Red Sun) or costume drama (Mayerling)) and all-star cast the film is very weak.
The plot is inconsistent and empty the idea to equip the Agatha Christy-like crime puzzle with subplots from other genres may seem not bad idea but it doesn't work at all
Subplot 1- (WWII -Jewish Tragedy with absolutely aimless trip to Poland) and Subplot 2 (French one - Schneider/Ronet story ) seem to be taken from the absolutely different film as well as the type-cast Shariff's line
Actually this all-star cast is the only reason to watch it, but its is painful to watch so much talent wasted. If Hupbern, Gazarra and Mason are at least is doing something during the boringly unveiling plot, the others are just fitting the empty space. especially annoying to see superb dramatic actresses like Papas and Schneider wasting their talent in this turkey.