The Spectre meets The Shadow - Guache on paper. Two great characters to paint - a pale glow for the Spectre and that half-lit appearance for the Shadow (great nose!) with some shine on his brilliant red scarf. I could paint them all day!
Both of these characters know what evil lurks in the hearts of men... Glad you like the layout - I felt their interaction was a little absent, or at least very much in teh imagination of the viewer. No harm in that.