A single piece of A4 paper found on top of a hidden fax machine gives police the number of a shipping container used to smuggle millions of pounds' worth of drugs from Thailand. The men responsible for bringing it into the UK had been under covert surveillance for months, but until the fax was discovered, there was no way of proving the gang's involvement in the international drugs trade. Also today, a cheque for a mattress links a brutal killer to a body found at a Premier League football stadium.

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.