"While the Thea sisters are at the excavation site of a dig at Hierapolis, Professor Brenninger unearths a series of priceless and very old figurines, but the Thea Sisters think the discovery may be a scam and investigate"--OCLC.
"After surviving their latest encounter with A, high school seniors Aria, Emily, Spencer, and Hanna must try to convince the police that the real A is still on the loose, all while trying to stay alive"--OCLC.
"Even though sixteen-year-old Erin Blake and her best friends Spam and Lysa are ordered not to become involved in any investigations, they look into Spam's boyfriend's past and conduct research to help Erin's uncle Victor and her boyfriend Journey re-examine evidence from the murder trial that sent Journey's father to prison"--OCLC.
Avery, Ella, and Evan make a pair of dolphin friends, Marco and Polo, in Cocoa Beach, Florida. Then, when dolphins start disappearing up and down the coast, the kids are determined to solve the case.
While Mimi is recovering from a broken leg, Avery and Evan visit the Savannah National Wildlife Refuge with Christina, but they become concerned when they overhear rumors of 'gator poaching,' and become determined to help find the culprits.
When a new shark species is discovered off the Carolina coast, Mimi and Papa take Avery and Evan to Palmetto Bluff to learn more about it. The theft of valuable fossils belonging to the University of South Carolina while the paleontologist responsible for them is dining with Mimi and her family, however, soon has Avery and Evan working to solve a new mystery.
