When new team members are being kidnapped and threatened, Frank and Joe join the basketball team at the request of their principal to uncover the culprits.

"Could the Mark Twain books hidden through Book Scavenger contain clues about the string of recent arson fires plaguing the city? And will Emily and James uncover the mystery before the arsonist comes after them?"--

"Pip is not a detective anymore. With the help of Ravi Singh, she released a true-crime podcast about the murder case they solved together last year. The podcast has gone viral, yet Pip insists her investigating days are behind her. But when someone she knows goes missing and the police won't do anything, Pip has no choice to investigate. After all, Jamie Reynolds disappeared on the very same night the town hosted a memorial for the sixth-year anniversary...

Arnie the talking doughnut is delighted to be Mr. Bing's new pet "doughnut-dog," so when Mr. Bing starts rolling gutter balls during a big bowling tournament, Arnie suspects foul play and sets out to solve the mystery.

"Michael Linden--or just Linden to his preppy boarding school pals--doesn't belong in wealthy, storied Martha's Vineyard. But when his roommate Jasper invites him to spend the end of summer at his massive beachfront home, August House, Linden tries his best to fit in. Linden wouldn't call it lying, exactly. Though it turns out August House is full of liars. Then someone is found unconscious in Jasper's pool, and everyone has something to hide--Jasper,...

It was only a few weeks ago that the Biedermann twins, Tess and Theo, along with their friend Jaime Cruz, followed the secrets of the Morningstarrs' cipher further than anyone had in its century-and-a-half history -- and destroyed their beloved home in the process. But the Old York Cipher still isn't solved. The demolition of 354 W. 73rd Street only revealed the next clue in the greatest mystery of the modern world, and if Tess, Theo, and Jaime want...