Chadwick Yates and the Anuran Contest (The Adventures of Chadwick Yates Book 3)

Ambassador Chadwick Yates and Commander Thurston Sharp face their greatest diplomatic challenge yet, wading into the mosquito- and anaconda-infested Bracken Fens. The tropical swampland is home to the Anurans, frog-like savages that possess the secret of conjuration majik. At times, every inhabitant of the village seems to vanish, leaving their civilization empty. To solve the mystery of where they go, Yates and Sharp must participate in the tribe's traditional sport.