Wealthy, reckless Californian Julie Merriday, accompanied by her boyfriend Harry Lindsay, an attorney, narrowly avoids crashing into a motorcycle driven by young Ben Gunther. Ben temporarily abandons his damaged cycle and accepts a ride from Julie but insists upon calling her Barbara. Later, at the Merriday beach house, Julie's Aunt Sarah tells Julie that her great great grandmother was named Barbara, and furthermore, that ancestress had an illegitimate child fathered by one Benjamin Gunther.
Unfortunately the movie My Blood Runs Cold is not yet available on Disney Plus.
| Directing | William Conrad | Director |
| Editing | William H. Ziegler | Editor |
| Camera | Sam Leavitt | Director of Photography |
| Art | Ralph S. Hurst | Set Decoration |
| Writing | John Meredyth Lucas | Story |
| Art | LeRoy Deane | Art Direction |
| Costume & Make-Up | Jean Burt Reilly | Hairstylist |
| Writing | John Mantley | Screenplay |
| Production | William Conrad | Producer |
| Costume & Make-Up | Gordon Bau | Makeup Artist |
| Sound | George Duning | Original Music Composer |
| Crew | Bob Herron | Stunts |
