English student who is revealed to be the masked killer. Driven by jealousy and failed romantic advances, he systematically murders the group. He is eventually set on fire by Sarah, stabbed in the water, and finished off by Carmen.
Frank is the masked killer who directly targets Sarah during the climax.
Frank engages in a physical struggle with Greg in the main pool.
Frank wounds Carmen during her escape attempt through the filter chamber.
Frank murders Mike by stabbing through the air duct floor.
Frank kills Martin alongside Mike during the duct escape attempt.
Explore the full interactive character relationship map of The Pool