The original CSI has always maintained a darker, more serious tone than its counterparts, but the Halloween special entitled “Suckers” really added a creepy depth to the series. In the episode, the team is faced with a vampire-like homicide investigation where a woman’s body is found with all of her blood sucked out.
The episode is highly atmospheric and dark, with many of the same qualities as regular episodes, but it also contains a lot of suspenseful elements like when the team investigates a modern vampire cult’s hang-out spot. While it’s not necessarily a Halloween episode per se, it does feature creepy lilting piano chords, thrills, and supernatural themes that make it a great find for CSI fans and those who love Halloween specials.