For over 40 years now, Andrzej Żuławski's Possession has been a staple of cult horror classics—just as well as the astonishing leading performance by Isabelle Adjani in it. While Adjani's outing became this wild film's trademark and something contemporary horror heroines are compared to and measured against (the way it happened with Lily-Rose Depp in Nosferatu), there is another central performance in Possession that deserves all kinds of praise—that of Sam Neill, who is playing the male lead, Adjani's husband. The significance of the role and the precision with which it is played comes from the fact that, at the start of this 1981 film, Neill's character, Mark, becomes our point of entry into the story—and our point of reference as well. Starting off with Mark's perspective helps the authors to initially frame the movie as a clash between a mystery and intense drama about a bad breakup. And keeping up with it eventually assists Possession in revealing itself as one of the most unhinged psychological horror movies of its time, and truly, maybe ever.