Complex sentence: He hunts Jeannie down who at the time was engrossed in a new love interest of her own eventually taking her to some rocky cliffs where he intended to cast her into the sea exactly one year after he was caught in the same spot.
Split into simpler sentences: He hunts Jeannie down who at the time was engrossed in a new love interest of her own eventually taking her to some rocky cliffs. There he intended to cast her into the sea exactly one year after he was caught in the same spot.