Sympathy for the Devil should play quietly underneath every moment of this 4th season episode which for the first time on the show shines a light on XF's chief baddie, the CSM. No Mulder, no Scully, just CGB and the ghosts of his blood-spattered past. File this under A for Ancillary Characters (Lone Gunmen eps like Unusual Suspects are also here in addition to Skinman episodes SR 819 and Avatar).