Kenneth Bianchi, one of the two serial rapists and killers who terrorized the Los Angeles area in the late 1970s, is giving police station interviews to psychiatrist Samantha Stone, who has disquieting lifestyle issues of her own. It falls to her to delve into the details of the case to determine the veracity of Bianchi's claims of multiple personality disorder, but in so doing, she is forced to relive the horrific crimes, one of which occurs at her very doorstep.
The main character falls into a coma. A protagonist has an incurable disease. It's implied that the secondary protagonist won't live long enough to see the main character again. It's more bittersweet than anything.
When the Schiff are exposed to sunlight, they burst into green flames. A chiropteran is killed by being covered in gasoline before being shot at, at which point it catches fire and falls down a shaft.
The main villain is expiramented on sense birth, the expiraments often inhumane. The main villain never really acts older than a teenager due to her upbringing, and is still exploited by the secondary villain.