New York Times bestseller Spencer Quinn returns with a laugh-out-loud series about the most epic rivalry of our time . . . Arthur the dog vs. Queenie the cat.

From the outside, Queenie the cat and Arthur the dog appear to have a lot in common. Both pets live in the charming Blackberry Hill inn.They both love their humans, twins Harmony and Bro. They both have a fondness for sausage.That doesn't change the fact that they are mortal enemies.Goofy, big-hearted Arthur loves everyone he's ever met . . . except the snobby, scheming cat who's devoted her life to ruining his.Queenie is a bit choosier. And who can blame her? When you're brilliant ANDexquisitely beautiful, you can't be expected to rub tails with commoners. Especially not slobbery dogs.But when a crime shatters their peaceful Vermont town, the two unlikely detectives will have to put aside their difference to catchthe culprit.