Doc Martin, the sole physician in a depressed Oregon mill town, looks after women making parachutes in a local factory. One, under threat of losing her job, becomes pregnant and turns to the doctor for help. He knows that the father, a foreman, has a contagious disease. When more young women are menaced, Doc and his wife, Charlotte, attempt to intervene. Sheriff Walker cooperates and seeks their aid in a sadistic murder case. Other murders, grizzly, baffling, also engage the couple. Suspects include the foreman's wife, her lover, and a colorful drifter. Doc and Charlotte are distressed when Walker makes false arrests. Now they have a mission to solve the crimes, free the innocents, and help bring the guilty to justice. The more they discover, the greater the risk to falling prey to the killer. And the sheriff, holding out for solid evidence, compounds their hazard. Charlotte becomes the killers next target . . . Forensic medicine, strength of character, and heroic action drive the dramatic conclusion.