“Extremely Wicked, Shockingly Evil and Vile” revolves around Bundy’s relationship with Liz Kendall, the single, Seattle mother who was Bundy’s on-again, off-again girlfriend throughout many of the serial killer’s early arrests and incarcerations. It attempts to convey Bundy’s ability to charm and deceive even those closest to him, while exploring Kendall’s own psychological and emotional struggle as she tried to come to terms with the allegations against Bundy.