Beyond the Grave is the fourth book in The 39 Clues series first published on June 2, 2009 and written by Jude Watson. Thematically the novel uses Biblical knowledge, prophecy, and spiritual topics to explore the afterlife.
Amy and Dan head for Cairo, Egypt, with their au pair Nellie Gomez, to find a clue, hidden by Ekaterina founder, Katherine Cahill. They were tailed by Irina Spasky, but escape to a store with an Egyptian goddess statue, the Sakhet. There, a man, Theo Cotter, shows up and convinces them it’s a fake. Discouraged, they go back to Nellie.
They went to the Hotel Excelsior and find the Ekaterina stronghold. They find three Sakhets, and get trapped there by Bae Oh, who is the hotel’s owner, and leader of the Ekats, after he explains the history of the Sakhets. As they escape, one of Grace’s friends, Hilary Vale, finds them and takes them to her house. She gives them a letter and a small Sakhet, sent from Grace and they find out Theo is Hilary’s grandson.
They head for Queen Nefertari’s tomb in Luxor and get trapped by Irina, who picks up Grace’s guidebook in the process.