"Thirteen-year-old spy in training Ben Ripley is sent to Mexico to try to thwart the evil organization SPYDER--the CIA's main enemy"--Title verso page.

"Miss Z, a mysterious billionaire and a collector of rare photographs, is sending her four recruits back in time on a mission to capture, for the first time, one of the most important moments in American history--Abraham Lincoln giving his famous Gettysburg address"--

When the UNICORNE agency asks him to use his paranormal abilities to investigate a dragon's scale, the same artifact his father was researching before he disappeared, Michael Malone believes he will finally be able to find out what happened to his father--but as he delves into his father's past it becomes harder to tell who he can trust, and which of the alternate realities he is discovering is the true reality.

Michael Malone is assigned to investigate a local comic shop by the mysterious UNICORNE agency because they are displaying a comic book with a disturbingly familiar heroine--but he soon realizes that the sinister shop hides an invisible army come to life, with a menacing maniac at its head, and worse he does not know if he can trust his fellow agents.

Nine-year-old Nicholas Benedict, an orphan afflicted with an unfortunate nose and with narcolepsy, is sent to a new orphanage where he encounters vicious bullies, selfish adults, strange circumstances, and a mystery that could change his life forever.

"She doesn't know who she is. She doesn't know where she is, or why. All she knows when she comes to in a ransacked cabin is that there are two men arguing over whether or not to kill her. And that she must run. Follow Cady and Ty (her accidental savior turned companion), as they race against the clock to stay alive"--

Thirteen-year-old Dan Cahill and his older sister, Amy, are the latest guardians of the Clues -- thirty-nine ingredients in a serum that transforms whomever takes it into the most powerful person on earth. They think they've done everything right, but a tiny mistake leads to catastrophe. The serum is missing and Dan and Amy have to get it back and stop who stole it ... before it's game over.

Gabe and the other monster hunters arrive in a wildlife management area in West Virginia to investigate reports of a monster called the Mothman--but mostly what they see are owls, until something much larger attacks them in the night.

When farm boy Homer Pudding's explorer-uncle dies and leaves him a droopy dog with a mysterious coin hidden on its collar, it leads him to The City, where they meet Madame La Directeur, the conniving head of the Natural History Museum, who is trying to steal the coin and take Homer's place in a secret society of adventurers.

Just after Cassie Arroyo found the Spear of Destiny in Rome, it was stolen from her, so now she and her friend Asher must recover it--but when she used the Spear before she set the world down a dangerous path, and if she recovers it she will have to decide whether to risk using it again.