Shortly before discovering the identity of the long sought ""Butterfly Killer"" Eddie Wheelock commits suicide. His friend and colleague Barnaby tries to prove it was murder. The killer leaves puzzling clues for Barnaby including a Greek typewriter.
| Name | Type | Role | |
|---|---|---|---|
| George Schenck | Writer | ||
| Mary Jackson | Guest Star | ||
| William Beckley | Guest Star | ||
| James Olson | Guest Star | ||
| Eddie Ryder | Guest Star | ||
| Judith Morton | Guest Star | ||
| Peter Mamakos | Guest Star | ||
| Charles Knox Robinson | Guest Star | ||
| Tanya Lemani | Guest Star | Greek Dancer | |
| Mary-Robin Redd | Guest Star | ||
| Frank Maxwell | Guest Star | ||
| Claudia Bryar | Guest Star | ||
| Byron Morrow | Guest Star | ||
| Carleton Young | Guest Star | ||
| Walter Grauman | Director |