Sunburn continued

Back story of Polly.  She married her (sort of) H.S. sweetheart. (He was 5 years older than her--more of a cradle robber.  Pregnancy forced the marriage, then she lost the baby.  He is a brute, physically and emotionally abusive.  They have daughter, Joy.  She takes life insurance policy on her husband for 1 million in her daughter's name.  She kills husband with a knife to the heart.  Somehow, Irving--the man who arranged the life insurance--feels cheated out of the money.  Polly ditches her daughter, somehow is not convicted of the murder, and then does a repeat with new husband.

Cath, at the diner, becomes suspicious of Polly.

She has her brother-in-law check on Polly. She discovers Polly's murderous past and confronts her. Polly decides to just tell Adam Bosk about her past. He is now in love with his prey and does nothing ( he has to fake that Cath has told him, but he's been hired because of her past). Suspiciously, that night, Polly's apartment building burns down. Polly is not in the building--she has spent the night with Adam--but Cathy is in the building and Cath does die. Where is the money?  why doesn't Polly have it right now? Will Adam continue to investigate her or will he fall an entirely under her spell?

 Nice book. Clearly in the style of James Cain whom she mentions. Feels a lot like Double Indemnity.