Overview
Prudence and Bélisaire Beresford have decided to take things easy. But when a rich Russian heiress disappears, Prudence can't resist and Bélisaire is forced onto the adventure. Their investigation will put them on the trail of a mysterious scientist who holds the secret to eternal youth...
| Actor | Age then | Age now | |
|---|---|---|---|
 | 56 | 69 | |
 | 66 | 79 | |
 | 58 | 71 | |
 | 40 | 53 | |
 | 38 | 51 | |
 | 54 | 67 | |
 | 72 | 85 | |
 | 57 | 70 | |
 | 35 | 48 | |
 | - | - |