by John R. Erickson (Author), Gerald L. Holmes (Illustrator)

A convoy of circus trucks is passing through the ranch. The last truck in the column hits a bump and a large red box falls off and comes to rest in the pasture. Hank and Drover investigate the box and discover that it contains a circus monkey. Pete advises Hank not to open it, but Hank's curiosity gets the best of him. What follows is fun and adventure.