Rest Stop.

It's 1975, and John Dykstra, a lowly college professor, with not much confidence but a semi-successful author, is on his way home from his monthly meet up group with fellow authors, when he decides to pull off to the nearest rest stop. What he encounters there is an unnerving domestic assault, that will force him to embrace his alter ego, Rick Hardin, the hitman in his novels, and finally decide what kind of man he wants to be.