When Annie Adams heads to London to visit her mother, Laura, the last thing she expects to find is a dead body. Least of all for it to be Fliss, the budding artist Laura had just taken under her wing. Annie is no stranger to murder - after all, she's solved a few cases already. And something about the way Fliss died feels familiar. She's seen a case like this before. Or read about it, rather, in the journals of her dead Great Aunt Frances, whose close friend was killed in the 1960s in the exact same way: with her heart surgically removed from her chest. As threats pile up on Laura's doorstep, it soon becomes clear that she's next, and that she's hiding something . . . With her mother's life on the line, can Annie find the killer before it's too late?