TV Series · 2020 · TV Series · 2020s
Helstrom
Scored from 156 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: TV Series · 2020s (3,070 peers).
Summary
Helstrom follows Daimon and Ana Helstrom, the son and daughter of a mysterious and powerful serial killer, as they track down the worst of humanity - each with their own attitudes and skills. Estranged siblings reunited by their mother's deteriorating condition, they confront supernatural threats tied to their demonic heritage while navigating a complicated relationship with the institution that has cared for their mother.
Helstrom is a 2020 action, adventure and drama television series.
The calibrated figure is built from 156 reviewers whose rating history varies enough to place their own average. A broader pool of 167 reviewers with two or more reviews feeds the raw-average track instead. 3,069 other television series from the 2020s form the cohort it is ranked inside.
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 Helstrom 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 TV Series · 2020s (3,070 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 156.
Cohort: TV Series · 2020s
