Complex sentence: As Harry proceeds, he finds "the lighthouse" is actually the name of Dr. Kaufmann's counseling clinic: the patient in the therapy session is an adult Cheryl, who is in denial over her father's death.
Split into simpler sentences: As Harry proceeds, he finds "the lighthouse" is actually the name of Dr. Kaufmann's counseling clinic. The patient in the therapy session is an adult Cheryl, who is in denial over her father's death.