The Underdogs serve it up

"Crime is on the rise in Dogtown, and it's all thanks to a doggone thief! It's nearly time for the Dogtown Tennis Grand Slam, but all the balls have gone missing. Could Boris Barker, the famed international tennis pro, be behind it all? Or what about Steffi Gruff? Or Novak Dogavic? No matter who the culprit is, if they're not stopped, the tournament will be ruined. So it's time to call in the Underdog Detective Agency: with Barkley the German she...