Mary-Kate and Ashley in Action!

Pants on Fire (1x13)

Air date: Feb 23, 2002

Mary-Kate and Ashley take on their toughest challenge ever when they become the personal trainers for out-of-shape villains Clive Hedgemorton-Smythe and his butler Bennington, who promise to go straight if the girls help them climb K2, the world's second tallest mountain!