Dog on It: A Chet and Bernie Mystery (Thorndike Press Large Print Mystery Series)

Meet Chet, the wise and lovable canine narrator of Dog On It, who works alongside Bernie, a down-on-his-luck private investigator. Chet might have flunked out of police school, but he's a detective through and through. In their first adventure, Chet and Bernie investigate the disappearance of a teenage girl who may or may not have been kidnapped, but who has definitely gotten mixed up with some very unsavory characters. (Bestseller)