Anyone know where to find this book?

A while ago I was at a Barne's and Noble and saw a cardboard stand of a book called "Murder with drink in hand" and had an anthromorphic kangaroo on it wearing a trench coat and sungles and I think a gun also. It had all these best seller reviews on it and it seemed interesting to read but I could never find it. Anyone heard of it or know the actual title if what I saw was a mistake?