'Don't Make Waves' -- the continuing story of Sidney Falco?
Some fans consider this theory true -- Sidney, last seen in "Sweet Smell of Success" about to come to grief -- 10 years later turns up in Malibu (under a different name), gazing at the horizon, watching Claudia Cardinale paint -- he has no back story mentioned, is a total con man, full of schemes, sweet talking every character in the movie, gets to jump out of a plane with Sharon Tate (and no parachute) and literally walks off into a golden sunrise on a beach with Claudia by his side....
Despite the same director (Sandy Mackendrick) and star (Tony Curtis), could this be what happened to Sidney....or wishful thinking?