The girls' friend Lindsay wants to enter her beautiful tulips in a flower contest, but someone-- or something-- ripped the flowers right off the stems. All clues point to a unicorn.

Mary-Kate and Ashley are selected to be on their favorite TV game show.

Clue, the basset hound, disappears from the cabin, and it is up to the girls to find her.

When the twins find giant pawprints behind the clubhouse of a dude ranch, an old ranch hand claims it is a dragon's.

Mary-Kate and Ashley must find a missing robot before the science fair is cancelled.

Mary-Kate and Ashley are psyched to see their friend Patty perform her Irish dance in the talent contest at the mall. But before Patty goes on stage, her emerald shamrock pin is stolen! The twins are sure they'll find Patty's pin in no time. After all, the thief left behind a chocolate fingerprint. But the case gets tougher when more jewelry turns up missing. Now the talent show might be cancelled -- unless Mary-Kate and Ashley can find the chocolate-loving thief lickety split!

Patty O'Leary invites all her friends, including Mary-Kate and Ashley, to a sleepover party in a toy store. When all the best toys start vanishing, the Trenchcoat Twins suspect there's an uninvited guest hiding in the store. Can they catch the thief or will Patty's party be a bust?

Where in the world could someone hide an elephant? That's what Ashley and I had to find out. The circus was in town, and their newest star -- Maysie, the baby elephant-was missing! It was our biggest mystery yet! We had to find Maysie before show time -- which was only two hours away! No problem. It shouldn't be too hard to find something that weighs a ton, right? Wrong!

The twins are called in to help solve a mystery with their Grandma.

After being invited to the Princess Ball, the girls find out that Princess Glorianna has been kidnapped. Can Mary-Kate and Ashley find her before the kidnappers get their ransom -- and get away with the princess?