A Trials of Apollo Companion Guide – Mysterious incidents are wreaking havoc throughout Camp Jupiter. If the Romans don’t figure out who–or what–is behind the episodes soon, the Twelfth Legion could implode. Suspicion falls on Claudia, daughter of Mercury, the god of thieves and tricksters. To find out whether she’s guilty or innocent, readers can delve into the pages of Claudia’s personal journal to read her eyewitness accounts, visit the crime scenes, and see the bizarre events unfold. With Claudia, they will discover an ancient secret that holds the key to Camp Jupiter’s safety.