Two retired brothers, both having worked as riggers for circuses many years before, are found murdered while a circus happens to be performing in San Francisco at the Cow Palace.
| Name | Type | Role | |
|---|---|---|---|
| Arthur Rowe | Writer | ||
| Mary Jackson | Guest Star | ||
| Will Hutchins | Guest Star | ||
| Michael Strong | Guest Star | ||
| Maurice Argent | Guest Star | ||
| Lynne Marta | Guest Star | ||
| Berni Valentine | Guest Star | ||
| Don Keefer | Guest Star | ||
| Dan Caldwell | Guest Star | ||
| Parley Baer | Guest Star | ||
| Russell Thorson | Guest Star | ||
| Ray K. Goman | Guest Star | ||
| Madlyn Rhue | Guest Star | ||
| Dick Van Patten | Guest Star | ||
| Angus Duncan | Guest Star | ||
| David Birney | Guest Star | ||
| Virgil Vogel | Director |