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.
Plot hole: After a chance meeting in Mexico, Tom Matthews invites Kelly and Scott to his home for dinner. The address is unlisted, neither knows where the other lives or is staying, and no address or phone information is exchanged before they part. But Kelly and Scott somehow find the house anyway.
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.