Who is Hugo Marlowe from The Egyptologist and what is their importance?

Hugo Marlowe is an Oxford scholar with a concentration in Egyptology. He joins the British army along with Ralph Trilipush and serves in Egypt. Paul Caldwell witnesses a homosexual encounter between Marlowe and a native boy in the desert, after which Paul blackmails Marlowe. Marlowe plays along for a while, then decides to kill Paul, but both end up missing and presumed dead.