The only episode without the Felix Mulholland character.
First credited appearance for Erica Hagen in TV or film, even though she had no lines and was only briefly seen. Strangely, veteran actor Olan Soule, who does have a speaking part, was left off the screen credits.
No less than four Star Trek (1966) guest actors appear: Louise Sorel, Kermit Murdock, Ned Romero, and Peter Brocco.
Ahna Capri soon after starred for director Duke in what would prove to be the best feature film of their careers, Payday (1973), top lining Rip Torn as a down & out country singer, the forerunner of the acclaimed Jeff Bridges film Crazy Heart (2009).
The title uses the term 'The Sign of the Cross' which is a ritual hand motion made by Christians symbolizing the Cross on Calvary by tracing the shape of the cross in the air or on one's own body.