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Mark Williams-Thomas returns to ITV for an explosive and ground-breaking new investigative series that shows how real life crime can be far more compelling than fiction. Williams-Thomas, the award-winning former police detective who unmasked Jimmy Savile as the UK's most notorious paedophile, re-examines a previously ‘closed' and chilling murder case, which has baffled detectives for more than 30 years.

Watch the full The Investigator: A British Crime Story movie online at no cost in high-definition (HD) quality. No downloads needed—simply click to play and experience the excitement with English subtitles included for your convenience.