Written by Marc Guggenheim. Art by Luke Ross. Cover by Ken Lashley. While on a mission to apprehend the latest incarnation of the Brotherhood of Evil Mutants, the X-Men discovered a villain amongst their number who was a complete mystery. Little did they know, the alien Kologoth was on a mission of his own! Now, they're on the verge of discovering Kologoth's true nature...but will it be too late?