" Even Elizabeth Peters recognizes that her cast of characters has grown out of all possibility of control, which explains why she's writing in flashback now. Set somewhere between Guardian of the Horizon and Falcon at the Portal, A River in the Sky can't help but be something of a place holder - after all, if anything really monumental happened here, it would have to be worked into the alread-established Emerson chronology. Still, it's nice to see pre-marriage Ramses gadding about and hear the Professor's diatribes about the Holy Land - but, sadly, nostalgia can't quite carry the plot. Skip this one, and go back and read He Shall Thunder in the Sky again. "
— Jennifer, 1/18/2014