Dr. Heidegger invites four of his respected friends to try out the elixir of youth.
| Actor | Role |
|---|---|
 Peter BroccoDr. Heidegger | Dr. Heidegger |
 John BarclayColonel Killigrew | Colonel Killigrew |
 Leslie BradleyColonel Killigrew | Colonel Killigrew |
| DDaniel FosterColonel Killigrew | Colonel Killigrew |
 Jane ElliotWidow Wycherly | Widow Wycherly |
| RRobert GuthrieMr. Gascoigne | Mr. Gascoigne |
 Richard HaleMr. Gascoigne | Mr. Gascoigne |
| MMichael QuinnMr. Medbourne | Mr. Medbourne |
 Jack RaineMr. Medbourne | Mr. Medbourne |
| EEdward SchaafMr. Gascoigne | Mr. Gascoigne |
| BBrian TaggertMr. Medbourne | Mr. Medbourne |
| ZZolya TalmaWidow Wycherly | Widow Wycherly |
 Lorna ThayerWidow Wycherly | Widow Wycherly |