Crosby Bonsall, Dan Bittner, HarperAudio
The Case of the Double Cross
Audible Audiobook
(HarperAudio May 1, 2012)
Wizard's Private Eyes don't want any girls in their clubhouse. But a funny little man double-crosses the boys with a message in code. Then Marigold and her girlfriends get to show just how much the private eyes really need them.