Bruce Coville 
Skull of Truth 

Mr. Elivess magic shop is back, and this time it is on the other side of Tuckers Swamp. And Tuckers Swamp is where Charlie Eggleston heads to escape a beating-for lying. Charlie cant seem to keep from lying, though sometimes his lies are for a good cause. When Charlie stumbles into Mr. Elivess magic shop, his eyes light upon The Skull. Charlie steals The Skull and it puts him under some sort of spell-he can only tell the truth. Trouble is, now no one believes him. . . .