Going by motorcycle Mason witnesses the secret burial of a murdered girl in the dunes. He is chased to death into an abyss by a helicopter. Barnaby, searching for Mason, traces wealthy Charles Manly Wheeling, whose girl friend tried to force a marriage.
| Name | Type | Role | |
|---|---|---|---|
| B.W. Sandefur | Writer | ||
| Don Porter | Guest Star | ||
| Patrick O'Neal | Guest Star | ||
| Phillip Pine | Guest Star | ||
| Laraine Stephens | Guest Star | ||
| Robert Hogan | Guest Star | ||
| Eric Server | Guest Star | ||
| Frank Marth | Guest Star | ||
| Nancy Priddy | Guest Star | ||
| Thom Carney | Guest Star | ||
| Lawrence Montaigne | Guest Star | ||
| Todd Lookinland | Guest Star | ||
| John Carter | Guest Star | ||
| Alf Kjellin | Director |