Case Files 13 & 14: The Case of the Guy Who Makes You Act Like a Chicken & The Case of the Felon With Frosty Fingers Enid Blyton
There are two stories/TV episodes in each book so they are 'flipper' books, with a front cover for each story. THE CASE OF THE GUY WHO MAKES YOU ACT LIKE A CHICKEN The circus and a hypnotist comes to town! THE CASE OF THE FELON WITH FROSTY FINGERS There's a cow-snatcher at work in Falcongate!