Film · 2020 · Films · 2020s
What Lies Below
Scored from 238 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: Films · 2020s (7,930 peers).
Summary
A teenage girl returns home from summer camp to meet her mother's charming new fiance, a mysterious water researcher. As she spends time with him at their secluded lakeside house, she begins to suspect there is something deeply unnatural about him and his intentions toward her mother.
What Lies Below is a 2020 drama, horror and science-fiction film.
7,929 other films from the 2020s form the cohort it is ranked inside. The calibrated figure is built from 238 reviewers whose rating history varies enough to place their own average. A broader pool of 254 reviewers with two or more reviews feeds the raw-average track instead. Rotten Tomatoes carries a separate audience for the same title, 50 of whom clear the calibration test.
How the score was built
We compare the reviewers of this title against every other title those same people reviewed. Each review is scored relative to the reviewer's own baseline — a 7/10 from a hard grader sits well above their average, while a 7/10 from a generous grader sits below theirs. Every reviewer then counts the same, so the result is a calibrated consensus rather than a raw average.
- Global percentile
- Where What Lies Below lands against every title we rank.
- In-cohort percentile
- The same comparison narrowed to its cohort — titles of the same format released in the same decade. A 1970s film is judged against 1970s films, not against last year's streaming series. Ranked against Films · 2020s (7,930 titles).
- AI-adjusted percentile
- The same reviewer-normalized score, corrected for how much confidence the sample supports: thin samples are pulled toward the corpus average. Each title keeps the share n / (n + 53) of its measured distance from the average, where n is its calibrated-reviewer count, and the result is ranked on the same scale as the global percentile.53 is the median sample size across everything we rank. Here n is 238.
Cohort: Films · 2020s
