At the suggestion of the local Rabbi, Delia Rich, health club owner asks Danny and Frank to act as private detectives to prevent her husband Ronnie being arrested for a major art theft. While Frank and Polish Joe earn a £5000 bonus for getting Ronnie safely out of the country, Danny can't resist carrying through the theft for himself.
When Frank foils the escape of one of Wally Fagan's men during a bank raid, he calls on Danny to make amends. When the prisoner makes his own escape from the police Danny is left with repaying the money Wally lost, closely watched by the Flying Squad. As Danny and bodyguard Jonjo plan a 'job' to raise the money, Frank has plans of his own and finally wins the money in a Chinese game of chance.