Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Ape Who Guards the Balance is the tenth in a series of mystery novels, written by Elizabeth Peters and featuring fictional sleuth and archaeologist Amelia Peabody. The book's title refers to the Egyptian god Thoth, the divine scribe who waits for the heart of the dead to be weighed on a scale and judged so that he may record its fate; Thoth is usually represented as having the head of an ibis, but also appears as a baboon or ape with the balancing scales. Luxor, 1906-1907. The Emerson clan is trying to determine where to dig during the upcoming season. But before they even leave England, they encounter Sethos and foil an attempt to kidnap Amelia. Suspicion for the attempt falls on Sethos, but not everyone is sure. Upon arriving in Egypt, the children, Nefret, Ramses and David, now in their early twenties but still children to Amelia and Emerson, acquire a magnificent papyrus, but are also stalked. Is Sethos behind this too?