In the current glut of miniseries about famous serial killers, Devil in Disguise separates itself by bringing a fresh approach to the table. Instead of the typically exploitive path of sensationalizing John Wayne Gacy’s (a terrific Michael Chernus) gruesomeness and depravity on screen, Devil quietly explores the monster’s psychopathy without caricature. It’s a powerfully grounded endeavor, especially because — in a rarity — it truly honors the victims, giving life to those who were taken too soon and the people they left behind. For once, genre fans are reminded that their entertainment is derived from actual tragedy and not faceless MacGuffins. Ryan Murphy’s Monster should take notes.