By: Mark Barber Chris Trebilcock’s The Dark Stranger understands that the power of horror is derived in part not from its tonal seriousness but from its ability to confront the issues in ways that are creatively charged.  Taking on the issue of depression, The Dark Stranger might take some flak for what at times feels like a facile exploration of depression.  However, Trebilcock deserves praise for creatively literalizing the demons we face as a means…