A young couple in the Los Angeles area are living an idyllic live, both working and expecting their first child in 4 months, but then life takes a terrible turn. The wife is murdered in a late nigh holdup at the candy store where she works. She leaves a clue written in blood, but the police cannot figure it out and the case goes unsolved for months. Then her husband figures out the clue and in his anger hunts down the killer and in a series of battles he and the killer go back and forth in their efforts to kill one another. The case takes an unusual turn at the end.