Kjell Lennartsson in "Stockholm Marathon" (1994)

Wealthy businessman Walter Petrus (Kjell Lennartsson) employs a caretaker who's wife kills herself. Hellström (the caretaker) realizes that it is a horrific event ten years earlier that led to his wife's suicide and he decides to take revenge on Walter, who was involved in the incident. He sneaks into the garage and waits until his lover has gone to work. But Hellström finds Walter murdered in the bathtub and decides instead to take revenge on the other man who was involved in the incident ten years earlier.