Getting Lincoln's Goat: An Elliott Armbruster Mystery — E.M. Goldman

Elliot Armbruster is an average tenth grader with a dream--he wants to be a detective like his TV hero Dangerous Dan McGrew. Opportunity knocks when Lincoln High's mascot, a goat, disappears at a pep rally. Elliot decides to investigate. But finding the goat isn't that simple. An anonymous tip on the goat hotline inspires Elliot to launch a rescue mission that turns into an outrageous wild goose--or goat--chase. Elliot soon discovers that in real life you can't cut to a commercial and success is never guaranteed.