In the april ed. of photography monthly there was a big guide to lighting portraits. One was "The main light, fitted with a Mini-Soft reflector dish, was positioned above and slightly behind the model. The Triflector is positioned below, carefully directing light onto the model's face. Normally having a subject's eyes in the shadow doesn't work, but this portrait is all about atmosphere and harsh shadow give a powerful, manacing feel"
I guess that would be a dark feel