Entanglement by Zygmunt Miloszewski
The morning after a group psychotherapy session in a Warsaw monastery, Henry Talek is found dead, a roasting spit stuck in one eye.
Public prosecutor Teodor Szacki, world-weary, suffering from bureaucratic exhaustion and marital ennui, feels that life has passed him by. But this case changes everything. Because of it he meets Monika Grzelka, a young journalist whose charms prove difficult to resist, and he discovers the frightening power of certain esoteric therapeutic methods. The shocking videos of the sessions lead him to an array of possible scenarios. Could one of the patients have become so absorbed by his therapy role-playing that he murdered Telak? Szacki’s investigation leads him to an earlier murder, before the fall of Communism.
And why is the Secret Police suddenly taking an interest in all this? As Szacki uncovers each piece of the puzzle, facts emerge that he’d be better off not knowing, for his own safety.