Help! Strange things are happening at Camp Crooked Lake! When our snacks disappeared, we didn't think much about it. But when we found snakes in our beds, we were on the case! Now Ashley and I need to figure out what's really going on -- before summer is ruined for everyone!

Mysterious happenings at Camp Crooked Lake have the twins solving another mystery.

While having the time of their lives at summer camp, Mary-Kate and Ashley are accused of a crime they didn't commit. Someone's been stealing other campers' care packages and blaming it on them! Can the Trenchcoat Twins prove their innocence and find the real thief before they're sent home?

Someone is trying to sabotage Ashley's chances to lead the cheerleading squad.

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?

The "trenchcoat twins" learn to surf while on vacation in Southern California, but when a friend seems to have a few too many wipeouts, the twins search for a surfboard saboteur.

Ashley and I were on a ski vacation, and we couldn't wait to hit the slopes -- until we heard the scary legend of Ski Mountain. According to the story, a monster snatched a boy right off the ski slopes! The boy was never seen again. But it was just a story. Or that's what we thought. Until our ski lift stopped mysterious in midair... And the tree outside our cabin was ripped apart... And we found giant footprints in the snow. We were on the case. Was there really a Ski Mountain monster? We were about to find out -- one way or another!

When there's a rash of missing basset hounds, the Olsen twins--along with their own crime-solving basset, Clue--help track down the missing pups. Original.

Mary-Kate and Ashley are off to summer camp to enjoy all kinds of water sports. But someone doesn't want the camp to remain open and begins to sabotage all the activities. The Trenchcoat Twins are ready to find the culprit at Camp Crooked Lake.

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?