"The missing hours" by Julia Dahl

An audio book

Claudia wakes in her student dorm room, not recalling how she got there. She's had sex. Trevor down the corridor helps her. Her sister Edie (wife of Nathan) gives birth on the same morning. Their parents Gabriel and Michelle have newly divorced. Each is rich.

A video of her is circulated, her having sex with Chad and Jeremy. Edie had an affair with Chad's father Ridley. She had an abortion. Michelle is having an affair. Ridley offers various people money to hush things up.

Claudia shares accommodation with Whitney, who Trevor is dumping.

Claudia disappears. $50k goes out of her account. She pays a girl $5k to drug Chad with Ketamin and get him to her hotel room. She decides to humiliate him rather than frame or kill him. She gets Trevor to maim Jeremy, a promising musician, but the assault ends up being life-threatening. She offers Trevor $2k for his help - no love interest.

[Each chapter is from a named third-person PoV. The story switches between timelines more than I expected. The set-up isn't subtle - there's a rich victim against a strong lawyer who's slept with the victim's sister and mother. Reputation, money and physical damage are the weapons.They're not used subtley either - or surprisingly. It's no surprise that the new baby doesn't feature much. I liked "looked at him as if he'd just sung offkey"]

Other reviews

• pecheyponderings (Backstories and development occurred in equal measure throughout, keeping the reader attentive so as not to miss anything being offered.)
• goodreads (3.34 - 3,859 ratings, 681 reviews)