As he grieves his best friend Benny's death, Mason and his friend Calvin, who are targeted by the neighborhood bullies, create an underground haven for themselves, but when Calvin goes missing Mason finds himself in trouble.

"A shooting has occurred. Investigators have not yet found evidence. Then they look in a storm drain and find shell casings. They put the casings in a paper bag and send them to the lab to be analyzed. Find out about the techniques and tools ballistics experts use to help bring even the toughest cases to a close"--

"When best friends Abbi and Skylar witness a clandestine meeting between a mysterious woman and someone in a dark van, they're thrilled. Finally, a mystery to spice up the summer! Who could these people be? Why are they meeting? Are they spies? Criminals? The two girls are determined to find out. But then a local woman goes missing and is found dead in the woods. And Abbi and Skylar realize that their detective work could hold the keys to solving...

Ali Cross is back in the gripping sequel to Ali Cross, the best-selling mystery that introduced readers to detective Alex Cross' son. In Ali's toughest case ever, his friend Zoe is in trouble after Ali and his friends witnessed a crime in Anacostia Park, and it's up to Ali to figure out why Zoe is lying to the police-and who she's protecting.

Five murder suspects are invited to the haunted Barclay Hotel for a weekend getaway, and it is up to twelve-year-old JJ and eleven-year-old Penny--and a lonely ghost--to figure out who committed the crime.

When the lead player disappears from a remote lake camp in Ontario, Canada, during the International TWIST puzzle competition, his fellow players, teens Lola Evans and Mateo Rivera, investigate. Includes notes about legendary monsters, discussion questions, and writing prompts.