During his honeymoon Paul Barringer falls to death from a cliff. Barnaby investigates for his widow Marilyn and finds out that there is one heir who wants to inherit the Barringer family fortune, killing the others. Marilyn waived, but learns she is pregnant.
| Name | Type | Role | |
|---|---|---|---|
| Robert W. Lenski | Writer | ||
| David Wayne | Guest Star | ||
| Roy Engel | Guest Star | ||
| Paul Fix | Guest Star | ||
| Laurence Haddon | Guest Star | ||
| Mark Goddard | Guest Star | ||
| Nick Nolte | Guest Star | ||
| Hal Riddle | Guest Star | ||
| Bill Zuckert | Guest Star | ||
| Meg Wyllie | Guest Star | ||
| Eileen Heckart | Guest Star | ||
| Barbara Stanger | Guest Star | ||
| Gene Nelson | Director |