sooner or later he would find a hand ( a large bald hand ) lying on his thigh , and when he looked at ferguson/darrent/light , he would see an expression of half-mad hope in the eyes ( mixed with half-mad guilt ) and a stipple of sweat on the upper lip ( in the case of darrent , the sweat had gleamed through a dark moustache like tiny white eyes peering through scant underbrush ) .