This very lightweight comedy focuses on young orphan Willie Taylor (Tim Hovey). Upset with the prevarications of the adult world, Willie launches a truth-telling campaign at school, with the blessings of his pretty teacher Joan Madison (Maureen O'Hara). Things begin to get dicey when Willie publicly reveals a slightly dishonest real-estate deal mastermined by his Uncle Arthur (Barry Atwater). Crusading reporter Ernie Miller (John Forsythe) transforms little Willie into a big celebrity, and in so doing wins the love of Joan. A good supporting cast helps smooth over the lumpier passages of Everything but the Truth.

~ Hal Erickson, All Movie Guide