Dark Secrets, book 3: The Siege of Camp Half Blood

SEQUEL TO DARK SECRETS, PREVIOUSLY "CASPIAN DAUGHTER OF POSEIDON". Ella&Cas almost have their lives back together when Cas's powers start to act strangely. They seek safety at CHB, but even there is not safe. Tartarus and Echidna are back with an army of monsters, and this time it may take the life of a friend to save the world. READ DARK SECRETS BOOKS 1&2 FIRST, PLEASE!