Case Of The Sinister Shadow. Theo Tanner Case Files, #1

Thirteen-year-old Theo Tanner's final year at Lakeside Public School is off to a disastrous start. Not only does he immediately clash with new kid Maverick Sloane-the basketball star everyone seems to worship-but their hallway confrontation ends with Theo's fist connecting with Maverick's nose. Now grounded and missing his family's weekend plans, Theo's future is looking about as bright as detention room lighting.
An invitation to his eccentric uncle's house thrusts Theo into a real-life mystery. The abandoned house next door has been dark and silent for months-until now. A shadowy figure is sneaking inside after nightfall, and Uncle Drew needs Theo's help to figure out why. Between dodging Maverick in the school hallways, nursing a hopeless crush on the new girl Frankie, and piecing together clues about the shadowy nighttime visitor, Theo discovers he might have inherited more than just his late father's policeman's badge.
He might have his talent, too. As the mystery deepens and the shadow's intentions grow more sinister, Theo must summon his courage to uncover the truth-and perhaps find his own path along the way. The first book in the Theo Tanner Case Files. Match wits with the newest teen detective, as he unravels the Case of the Sinister Shadow!