Trouble Is a Friend of Mine by Stephanie Tromly
Of course Zoe Webster didn't like Philip Digby when she first met him. No one does! He's rude and he treats her like a book he's already read and knows the ending to. But Zoe is new in town and her options for friends are . . . limited. And before she knows it, Digby--annoying, brilliant, and somehow attractive?--has dragged her into a series of hilarious and dangerous situations all related to the investigation of a missing local teen girl. When it comes to Digby, Zoe just can't say no. But is Digby's manic quest really worth all the trouble he's getting Zoe into?