Marble Hall Murders by Anthony Horowitz
If you've read the first two in this series, you know that Susan should stay far away from Atticus Pünd novels, they only lead to trouble. If you've read the blurb above, you know that this time is no exception, even though there's a new author since Alan Conway was killed in book #1. I would suggest at least reading Magpie Murders first, since a.) there are spoilers in this one, and b.) there are a couple of returning characters who have major pieces in this one.
As usual in this series we have a book within the book. In Pünd's Last Case written by Elliott Crace, Lady Margaret Chalfont has been poisoned. Elliott believes his own grandmother, renowned author Marian Crace, was murdered 15 years ago and has worked clues to who the killer was into his novel. Then Elliott is killed in a hit and run before finishing the book - with Susan being the main suspect in...