The city of London is gripped with fear as a serial killer - dubbed The Limehouse Golem - is on the loose and leaving cryptic messages written in his victim's blood. With few leads and increasing public pressure, Scotland Yard assigns the case to Inspector Kildare (Bill Nighy) - a seasoned detective with a troubled past and a sneaking suspicion he's being set up to fail. Faced with a long list of suspects, including music hall star Dan Leno (Douglas Booth), Kildare must get help from a witness who has legal troubles of her own (Olivia Cooke), so he can stop the murders and bring the killer to justice.