What Lies Below is a 2020 American horror film written and directed by Braden R. Duemmler and starring Ema Horvath, Mena Suvari, and Trey Tucker.

A 16 year-old high school girl, Liberty Wells, who goes by Libby, returns to her family lake house after summer camp.

Libby meets her mother's new boyfriend, John, an aquatic geneticist, who gives her a bracelet with symbols for the goddess of fertility.

Several men who look identical to John appear and start to peel the walls back to reveal many unconscious women in water tanks.

Cath Clarke of The Guardian rated the film with 1 out of 5 stars and wrote: "A perplexing erotic storyline isn't the worst thing about this sci-fi mystery, which is marred by wooden acting and poor judgement.

"[3] Jack Wilhelmi of Screen Rant gave it 3 out of 5, designating a "good" rating, offering praise for Horvath and Suvari, but offered negative critique for the film otherwise, writing: "Everything that has been done, from sinister boyfriends to undersea monsters, lacks potency here partially because it's been done before – and sometimes, done to death – and partially because it just barely misses the mark.

[5] Sara Finkel of Insider accused the film of "confusing Netflix viewers" and called it "[a] soapy thriller" and "a shallow mishmash of horror tropes".