Overview
A secret agent possesses a ring that makes him invisible for a short time, once every 10 hours. He is in pursuit of an evil criminal mastermind but, at the same time, must evade an enemy agent who also wants the ring.
Cast
- Patrick O'Neal as Perry 'Matchless' Liston
- Ira von Fürstenberg as Arabella
- Donald Pleasence as Gregori Andreanu
- Henry Silva as Hank Norris
- Nicoletta Machiavelli as Tipsy
- Howard St. John as General Shapiro
- Sorrell Booke as Colonel Coolpepper
- Tiziano Cortini as Hogdon (as Lewis Jordan)
- Elisabetta Wu as O-Lan (as Elisabeth Wu)
- Eddra Gale