Highway 13 is a 1948 American drama film directed by William Berke and starring Robert Lowery.
Henrietta's husband Frank Denton goes to see the owner of the Norris Trucking Company, J.E.
Norris and voices his concerns about the company not rigorously investigating the accidents despite his earlier recommendations.
Frank Denton walks in and asks Hank if he’s the man who found his wife after the accident and if he noticed anything unusual about it.
To which Hank said that no, but it is starting to seem a bit odd and coincidental to just be a run of the mill “jinx” as it’s been happening a few too many times and all in the same area.
After the sixth accident, the investigator George Montgomery is hired as one of the company’s truck drivers under cover and shadows with Hank while on one of his routes.
Before returning to the company warehouse, Hank makes a stop over at the Cafe with a ring and proposes to Doris, who accepts.
A hand is seen releasing the break on Hanks truck, allowing it to back into George, killing him.
He introduces himself as Keller and tells him that George has been in contact with the insurance company during his investigation and had believed Hank was in the clear.
So, In a leap of faith they strike a deal where Hank gets reinstated at his job if he helps prove the accidents were intentional and figure out the motive behind it.
Hank waiting nearby, overhears the call and confronts pops, urging him to confess.
They just have to tell the police Hank had wrecked the trucks because his mind was injured in the war and blackmailed Pops into doing his dirty work.
She believes Keller will back their story as it will save his company from having to make the insurance payment.