Revelation is the fifth book in Morgan Bruce’s seven-part “Accidental Angel” series. Alexei and Tristan have a secret. They are brothers who are also angels trying to live a life on Earth as ordinary children. They have wings and can fly, teleport, and be invisible, and they believe they are the only angels attempting such an undertaking. Amidst their need for secrecy, they have already survived an attempt on their lives by a mad photographer, and the evil intentions of a turned angel. Now it seems they are being readied for a new mission to right the wrongs of a distant past, even though they don’t yet understand how they will go about this new quest. As a further complication, the discovery of an ancient chalice starts to give them unnerving dreams, designed to provide them with knowledge of past events that relate to the future. But this knowledge also exposes them to considerable danger from both human and angelic realms. In all of this, they find an unexpected future ally in a very sick boy in a hospital on the far side of the world.