Johan
Johan is an associate professor at Psychotechnology Institute and he is married for Marianne. They agreed to marry not based on love, but on the fact that they were both unhappy. He has an affair with a younger woman, Paula which splits their marriage up. And after years apart, he and Marianne begin an affair of their own.
Marianne
Marianne is a family lawyer like her father, specializing in divorce. She was married before meeting Johan and at 19 years old lost her child. The loss split their marriage up and she married Johan out of the fact that they were both unhappy, not because they were in love. She gets a divorce from Johan, but years later enters into an affair with her ex-husband.
Katarina
Katarina is married to Peter. They come to Johan and Marianne's home for dinner and she destroys her husband while he annihilates her. She loathes him physically which she says after Peter won't stop instigating a fight between them during their dinner with Johan and Marianne.
Peter
Peter is a businessman married to Katarina. He begins to reveal that their marriage is not going so well to Johan and Marianne at dinner, a fact which angers Katarina who can't believe he would tell them this. He continues to get more and more drunk and becomes cruel to his wife who eventually throws her drink onto him before exiting the room. He cries in front of Johan and Marianne.
