Complex sentence: To make amends for his wrongdoings, Charles transfers Eben's demons into his own body and tries to drown himself, but is saved by Diana's step-grandmother and petrified by a spell.
Split into simpler sentences: To make amends for his wrongdoings, Charles transfers Eben's demons into his own body and tries to drown himself. But, he is saved by Diana's step-grandmother and petrified by a spell.