A man is conclusively linked to a series of murders at music venues by a shoelace with traces of his final victim's DNA on it. After two people are set upon at a music festival by attackers with the same description, police are in a race against time to find their man, but then a third assault at a nightclub leaves them a vital clue. Also today, coded information buried within a spreadsheet reveals the man responsible for a campaign of hacking and blackmailing that targeted businesses.

A car hidden deep within a scrapper's yard unlocks the riddle of a suspected gangland shooting at a secluded location. As police build their case against their prime suspect, they can't place him at the precise location of the shooting at the time of the murder. Also today, police secure the UK's first conviction for modern day slavery at a car wash after the owner's phone is shown to have tracked the victims' minibus as they were brought into the country.