Mulder and Scully enlist former FBI profiler Frank Black's help in recapturing federal fugitive Lucy Butler. The agents, particularly Mulder, find themselves baffled and disturbed at Frank's warning: In catching Lucy, the devil really is in the details. This story fits in Season 7 of "The X-Files" after "Millennium" and immediately before "Orison."

Sam hasn't spoken to Dean in years. Everything is fine until one day he sees an omen of his brother's impending death. Suddenly, Sam finds himself on the road, looking for his wayfaring brother and trying to figure out a way for him to avoid his fate.