Young woman hires Markham to probe seance cult involving her wealthy aunt.
| Name | Type | Role | |
|---|---|---|---|
| Charles Beaumont | Writer | ||
| John Kneubuhl | Writer | ||
| Katherine Squire | Guest Star | ||
| Betty Lynn | Guest Star | Helen Burke | |
| John Hoyt | Guest Star | Bill Delaney | |
| Bretaigne Windust | Director |