5X04 - Hell Bound

[Raven]

After a series of horrific visions, Spike realizes that he is being pulled away from the material world and into hell. Fred tries frantically to find a way to save him, but soon realizes that there is an outside force that is causing Spike's dimensional shifts. An entity residing in Wolfram & Hart itself.

Writer: Steven S. DeKnight

[Lior Knight]

Now this was a brilliant story! Not only they explores Spike's disappearances they also managed to creep the hell out of me which many shows/movies haven't had in quiet some time. ;D

10/10.