Luc Merenda suffers from amnesia.His memory is fragmented but he seems to remember that he was once married to Senta Berger.When he returns to her his past partners in crime appear and want to get the money he has hidden somewhere...Superbly shot Italian giallo with violent and exciting finale which includes chainsaw vs chair duel.Luc Merenda is a pretty good lead and Senta Berger makes for a beautiful heroine and there's also a smaller role for genre regular Anita Strindberg.There are several suspenseful moments in "Puzzle",so fans of Italian gialli won't be disappointed.The film lack sleaze and high body-count,but overlook that and you have one of the best Italian giallos of early 70's with lovingly breezy Gianni Ferrio score.8 giallos out of 10.