Black Day, Blue Night on AllMovie

Tough, world-weary wanderer Rinda travels throughout the Southwest working occasionally as a truck-stop cook. She is in one lonely town when she hooks up with sexy Bo Schrag. They have a brief affair, and she doesn't realize Bo is married until his plain wife shows up during one of their sessions with a shotgun in her hand. Rinda and Hallie Schrag end up becoming friends and taking off for Phoenix. This taut little thriller chronicles their many exploits along the way. The tenuous friendship between two is nearly destroyed when they pick up handsome cowboy hitcher Dodge after he helps them fix their car. Together the three go to a deserted hot springs, and en route a quiet, tense rivalry between the women, both of whom want the enigmatic Dodge, builds. Meanwhile, back in the town they just left, police begin investigating a robbery-homicide that just may involve Dodge.