Liar. Bad mother. Murderer? You decide...

Ex-journalist Mercer Hennessey can't think of a good reason to get up in the morning. Since losing her husband and her little girl in a car crash, she's living in what she secretly calls the darkness. But when her editor asked her to write an instant true crime book on the murder trial of Ashlyn Bryant, Mercer finds a new purpose.

On trial for the murder of her baby, Ashlyn is currently the most hated person in America. If Mercer can write the story of her conviction, she might just have a bestseller on her hands, as well as achieving justice for a little girl.

And Ashlyn is so obviously the villain of the story: a party girl, man-crazy, ambitious and unrepentant. She's clearly never been a good mother. But is she a killer...?

"Ryan raises the bar sky-high - I knew she was good, but I had no idea she was this good." Lee Child