"Harriet Wermer investigates more mysteries during her stay on Marble Island"--

"After buying a strange old wardrobe, Adam Caine and his mom are confronted by an old woman who claims that it belongs to her. The store owner explains that "The Witch" has been shouting curses at people for years but is harmless. However, when the movers are delivering the wardrobe, the door suddenly swings open and out falls the old woman--dead! How did she end up inside the wardrobe? More importantly, what happened to her?"--Title verso page.

"Rebecca Zamolo is on a mission to save her summer. Instead of going to camp like she'd planned, she's been stuck in summer school. But today is the day! She's going to present her final science assignment--using her Nana's borrowed vintage zoetrope--and then she'll be free to have fun. But as Becca and her classmates wait for her teacher to arrive, a menacing voice comes over the intercom claiming to be the Game Master! The kids quickly discover...

"Aidan disappeared for six days. Six agonizing days of searches and police and questions and constant vigils. Then, just as suddenly as he vanished, Aidan reappears. Where has he been? The story he tells is simply...impossible. But it's the story Aidan is sticking to. His brother, Lucas, wants to believe him. But Lucas is aware of what other people, including their parents, are saying: that Aidan is making it all up to disguise the fact that he ran...

For once, operations at the enormous zoo/theme park appear to be running smoothly (except for the occasional herring-related mishap in the penguin exhibit) and Teddy Fitzroy is finally able to give detective work a rest. But then a local lion is accused of killing a famous dog--and the dog's owner, an inflammatory radio host, goes on a crusade to have the cat declared a nuisance so it can be hunted. However, there's evidence that the lion might have...

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.

Cowslip Grove seems like the perfect place to raise a family until the children start disappearing. Nobody looks for the children because nobody can remember them. Nobody except Levi and Kat. Now they must figure out what terrible presence is taking the chilren and fight it to save the missing kids, before the whole town disappears.

"Scooby-Doo and Mystery Inc. gang visit an archeological dig, but the camp is deserted, including Professor Cosmo Dinkley. The professors journal reports a series of frightening encounters with something called the Gator Man, and the gang is convinced that the creature has kidnapped the crew. Has the legend of the Gator Man come true, or is it all a big crock? Action-packed text and comics-style art combine in this Scooby-Doo mystery!"--Back cover....

"Twelve-year-old Minerva Keen forms a detective club to uncover who is poisoning residents of her storied Chicago apartment building, knowing that any one of her neighbors could be the poisoner--or the next victim"--

Rendered a ghost by a bicycle accident, young Finn McAllister teams up with fellow spirit Isabella Rojas to commit invisible pranks on the living, before discovering that they cannot move on to the afterlife.