It's the eighth inning! "The Missing Marlin" is book #8 in our early chapter book mystery series, where each book is set in a different American ballpark! Mike and Kate are in Miami visiting Kate's Uncle Oliver and the Miami Marlins ballpark, of course! Uncle Oliver is in charge of keeping the new fish tanks at the ballpark fully stocked, but strange things keep happening. Kate swears she saw an endangered sea turtle in one of the tanks.