Joe Berlinger's back with yet another serial killer documentary, this time centered around the ruthless John Wayne Gacy. I was afraid he'd waste time focusing on Gacy being a "killer clown" when, in fact, he wasn't - he simply was evil personified! The manner in which he elaborates how he treated his victims and the horrifying aura of feeling powerful from doing such acts is something that's really tough to digest as a viewer. The second episode considerably slows things down, with too many back-and-forth jumps in timelines. However, the third and final episode wraps things up nicely, and seeing the victims' pictures will make any viewer feel a lump in their throat. This is especially the case when you hear Gacy's voiceover proclaiming that society can kill him only once when he's killed 33 times, followed by laughter that sends chills down your spine.