Complex sentence: After receiving the message, Leo drives over to Crow's Hall accompanied by Sara, to whom he reveals that Linda does not exist but is a split personality developed by Paula to cope with her brother's abuse as a teenager.
Split into simpler sentences: After receiving the message, Leo drives over to Crow's Hall accompanied by Sara. When they arrive, it is revealed that Linda does not exist but is a split personality developed by Paula to cope with her brother's abuse as a teenager.