Directed by Arthur Lubin, it was shot entirely in Northern California, including scenes in Sausalito at Larkspur in Marin County, on Nob Hill in San Francisco, and throughout the Bay area.
At the last moment, she feigns illness, then asks him instead to give a ride to her poor "cousin" (ostensibly her aunt's favorite nephew) hitchhiking his way home to Evanston, Illinois.
On a pull-out on a deserted roadside high in the Sierras, Torrence executes their murder plan, striking Williams directly on the head with a lug wrench, and then rolling his body down a steep embankment.
Spooked by two moving van attendants stopping their truck to offer assistance with a seeming auto breakdown, he races off wildly in Williams' roadster, straight into a head-on collision with a gasoline tanker.
A skilled mechanic, he immediately gets a job at a local service station owned by Marsha Peters, a young war widow.
Rooming as a boarder with Marsha and her mother, Williams enjoys life recovering in Larkspur, but furtively follows developments in San Francisco, wanting to let Irene pay for her treachery.
When he does, Irene, a consummate liar throughout, sees an opportunity and effortlessly turns the tables on Walt, accusing him of planning the entire thing to murder both her and Torrence.
The Williams' Nob Hill penthouse home in San Francisco was shot at the historic Brocklebank Apartments at 1000 Mason Street.
Although its review did not mention Williams' Packard or the Bekins moving truck, it flagged "advertising plugs worked in for such products as Pabst Blue Ribbon beer, Raleigh cigarettes, Coca-Cola, Mission Orange soda pop, Mobil gasoline, oil and tires, Gruen watches, and the trade name Rexall.
"[6] In 2019 Diabolique called it "a solid film noir with a decent cast and typically brisk handling; Lubin may not have been strong with horror, which depends heavily on mood, but with thrillers, which benefited from speed, he was fine.