New Bobbsey Twins Books in Order

Money collected at a children's charity mini-marathon disappears from its contribution box. The Bobbsey twins investigate the theft, trying to identify who took the donations intended to help hungry people and recover the missing funds.

Flossie's movie role becomes overshadowed when a jeweled miniature balloon is stolen and a teenage star is blamed. Nan believes he is innocent, prompting the Bobbsey twins to search for the person who really took it.

A smoke bomb interrupts Nan and Bert's band competition at Jungle Park, where other apparent accidents have already caused concern. The Bobbsey twins investigate the sabotage before continuing problems force their favorite amusement park to close.

Nan's new science teacher has a house full of robots, including an especially impressive invention someone wants to steal. The Bobbsey twins investigate the threat, trying to identify who is targeting Mr. Newman's creation.

On a Mississippi paddleboat trip, the Bobbsey twins befriend Larry, the cook's son. When a valuable book disappears and he is accused of stealing it, they investigate the passengers and clues to prove his innocence.

Bert believes he has seen a UFO over Lakeport, and the Bobbsey twins find burn marks when they investigate. A stranger's warning to stay away makes the apparent encounter with aliens even more puzzling.

A sand castle contest leads the Bobbsey twins to a clue about gold hidden in an old Victorian house. While staying in the supposedly haunted building, they investigate its secrets and the unexplained events around them.

The Bobbsey twins plan to adopt a puppy from the firehouse mascot's litter, but the pups are stolen. Suspecting Danny Rugg, they investigate the disappearance and try to bring the missing animals safely home.

At More and More Toys, someone is stealing antique toys and leaving convincing replicas in their place. The Bobbsey twins investigate the substitutions, trying to discover who is behind the thefts and recover the originals.

The Bobbsey twins look forward to a gymnastics competition until someone begins sabotaging star athlete Mary Lee Chin. Bert and his siblings investigate the interference, trying to identify the culprit and give her a fair chance.

Togo arrives in Lakeport with the Magic Max Circus, then finds himself accused of burglary. The Bobbsey twins believe the clown is innocent and investigate the evidence, hoping to uncover who actually committed the crime.

A masked thief steals a chocolate cake, then destroys another at a diner, leaving the Bobbsey twins puzzled. Flossie's visit to a friend's family bakery becomes the beginning of a search for the reason behind these strange attacks.

Freddie thinks he sees an Egyptian mummy come to life, seemingly fulfilling a museum legend. When the mummy disappears shortly before Halloween, the Bobbsey twins investigate whether something supernatural or a human trick explains its movements.

The last clue in a treasure hunt disappears before it can be revealed, threatening the eagerly awaited contest. The Bobbsey twins race to find the missing envelope and discover who stole the information it contains.

Meg Chester and her father discover a sunken Spanish treasure ship, but another claimant gets there first. When its riches disappear, the Chesters become suspects, and the Bobbsey twins investigate to clear their friends' names.

While visiting Merlin, the Bobbsey twins encounter a strange disappearance at a fun house. Two people enter and fail to come out, sending the children investigating what happened inside the attraction and where its visitors went.

The Bobbsey twins' dog, Chief, digs up what appears to be a dinosaur bone at the lumberyard. When the bone disappears, the children investigate the theft and the importance of their dog's unexpected discovery.

Flossie enters Lakeport's figure-skating contest, but sabotage disrupts the event and the evidence points toward her. The Bobbsey twins investigate what happened, determined to identify the real culprit and clear their sister before she takes the blame.

The Bobbsey twins arrive at sleepaway camp expecting swimming, horseback riding, and summer fun. When the camp's ponies disappear, their holiday becomes an investigation as they try to find the missing animals and discover who took them.

The school science fair turns into a mystery when someone begins sabotaging it. The Bobbsey twins set out to identify the culprit behind the disruption, determined to stop the interference before the event is ruined.

A prized autographed baseball disappears during a neighborhood block party, leaving a celebration with an unexpected mystery. The Bobbsey twins enlist their sheepdog Chief to help track down the missing collectible and catch the thief.

Freddie and Flossie are thrilled to appear on the children's television game show Don't Goof. But someone keeps sabotaging their team behind the scenes, sending the Bobbsey twins searching for the culprit before their chance to compete is spoiled.

While volunteering to clean up Casper Creek, Freddie and Flossie discover that something in the water is making their sheepdog Chief ill. Their effort to improve the creek becomes an investigation into what is harming him.

The Bobbsey twins' new cookie business depends on Grandma's special batter, until someone steals the secret recipe. Recovering it becomes an urgent mystery as the children try to protect their fledgling company from losing its essential ingredient.

Freddie's friend Shannon Whitaker is preparing her pig for the Best Pig contest when the animal disappears. The Bobbsey twins investigate the missing entrant, turning an anticipated competition into a search for their friend's prized pet.

Someone is trying to sabotage the Lakeport PTA variety show, threatening the performance before it begins. The Bobbsey twins must investigate quickly and uncover the culprit while there is still time to prevent the show from being ruined.

The Bobbsey twins enter a treasure-hunt giveaway and succeed in cracking its code. But the video containing the last clue disappears, leaving them with another mystery to solve before they can finish the contest.

Someone is interfering with the neighborhood mail, drawing the Bobbsey twins into an investigation close to home. As they look for the culprit, their expanding list of suspects makes almost everyone on their street seem suspicious.