Overview
While in London trying to nab several fugitives who stole a million dollars from a U.S. Treasury vault, American federal agent Dennison (Dennis O'Keefe) assists Scotland Yard Insp. McClaren (Philip Friend) in his search for a missing atomic scientist (Paul Hardtmuth). The detective duo discovers that the key to solving both cases may rest with the scientist's daughter (Margaret Sheridan) and her fascinating diamond.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 46 | August 31, 1968 (60) | |
 | 27 | May 1, 1982 (55) | |
 | 39 | September 1, 1987 (72) | |
 | 46 | August 30, 1991 (84) | |
 | 41 | April 18, 1984 (71) | |
 | - | - | |
 | 28 | May 14, 2024 (98) | |
| - | - | |
 | - | - | |
 | 46 | December 1, 1995 (88) |