When he and his friends discover a huge clam containing a giant and extremely rare pearl, Geronimo Stilton writes an article about the finding in the Rodent's Gazette and attracts the attention of would-be pearl thieves.

When a string of high-end robberies hits Bayport, Joe and Frank Hardy look for the main suspect, an old thief named the Phantom, whose next target could be the valuable Emerald of Astara.

When twin thieves, Arian and Cavar, attempt to pull off a daring heist, they find themselves embroiled in court politics and family secrets, making their mission more than just another artifact theft.

When one of the helmets in Sven the Shouter's private collection is stolen, the micekings find their investigation complicated when the dragons attack.

Danny Dragonbreath and his friends try to help the senior reptiles of Sunny Acres find a lost item.

When Geronimo Stilton learns someone wants to steal the antique silver skates being offered as a prize in Mouse Island's annual winter Ice Skating Championships, he races to uncover the mysterious thief and save the prize.

During a school field trip to Sunnyview Playhouse, Captain Awesome and his friends spring into action after seeing a mysterious Man in Black who seems to be stealing jewels.

When the Stone of Fire has been stolen, Geronimo Stiltonoot, Geronimo Stilton's ancestor, is on the case to retrieve the artifact from Tiger Khan and his band of fearsome felines.

"Kitty is proud of the lantern she has crafted for Hallam City's Festival of Light. But just as the parade starts, a series of mysterious burglaries occur in the crowd. Kitty spots a shadowy figure and knows that she must use her catlike superpowers to investigate. Chasing the culprit without the help of her cat crew tests her bravery and superhero skills, but Kitty is determined to track down the thief before the city.s festival is ruined"--

While visiting his girlfriend Summer in Malibu, Teddy stumbles upon two mysteries involving a blown up whale explosion and a string of beach sand thefts, but his investigation is sidetracked by a rumor that his girlfriend is dating a celebrity, leading him to question their relationship.