TV Series · 2009 · TV Series · 2000s
Harper's Island
Scored from 79 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: TV Series · 2000s (1,360 peers).
Summary
A group of people invited to a wedding on a remote island are systematically murdered by an unseen killer as they uncover secrets connecting them to one another.
Harper's Island (2009) is a television series IMDb files under the drama, horror and mystery genres. It was made in the United States. It is rated TV-14.
A second review pool sits behind it as well: 6 Rotten Tomatoes reviewers clear the same calibration test, and Rankquant scores them separately. 1,359 other television series from the 2000s form the cohort it is ranked inside. Only 79 of its IMDb reviewers rate with enough spread for a personal baseline to be measured, so the calibrated figure rests on a thin sample; a broader pool of 88 reviewers with at least two reviews feeds the raw-average track.
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 Harper's Island 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 · 2000s (1,360 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 79.
Cohort: TV Series · 2000s
