Complex sentence: Bernard attempts to use hypnotherapy on Ian, who then returns to live with his parents and writes a letter to Annik admitting his fear that his epilepsy will eventually kill him, and confessing that he loves her.
Split into simpler sentences: Bernard attempts to use hypnotherapy on Ian, who then goes to stay with his parents. He writes to Annik admitting his fear that his epilepsy will eventually kill him, and confesses that he loves her.