Parallels with Indiana Jones and the Last Crusade
Did Steven Spielberg and George Lucas use this as an inspiration while making Indiana Jones and the Last Crusade? Both have sequences in Venice, a motorboat chase with the hero and female lead being chased, the female lead is a spy who changes allegiances in the film (and even look similar.) I say changes allegiances, because in one film the female is a baddie who changes to the hero's side while the other pretended to be good but was bad, both were hired by the bad guys to seduce the hero to glean information from him. there is an underground sequence with water and rats, and they come up through a secret escape route outside to get away. Had this film for a long time, but I guess I never got around to watching it till now....
There's something wonderful about a storm.