Continuity mistake: At about 31 minutes, Robert Culp and Bill Cosby climb out of the water completely soaked. They are called over to a boat and run up one flight of stairs and down another and when they reach the boat, their clothes are completely dry and pressed.
Continuity mistake: When Wellington drags Melanie into the room where the Chinese buyer waits, he's holding her by the elbow. But when the shot cuts to a wider angle, her arm is instantly down at her side instead, and Wellington is standing apart, no longer touching her at all.
Continuity mistake: While they sit side-by-side on the park bench, Don Silvando places his hand on Kelly's shoulder. The camera angle reverses, and Silvando's hand is immediately in his lap - and Kelly's shoulder, which should still be in frame, has disappeared.