After confiding in her father Mr Reid, the council supremo, that a music box has gone missing from her safe, Scarlett contacts Phil and Sam and demands they return it or else she will tell the police they killed Stevens. They discover it was sold to Marat Malankovic and set out to buy it with the money found in the car boot but they are pursued by Lau, who takes all the cash. They arrive at Marat's house intending to steal the box and find a party in progress, during which Phil saves Marat from an attempt to kill him. The grateful Russian gives the lads the music box by way of thanks but MI5 have discovered that they are driving the deceased Walker's car.

Thanks to some nifty driving by Phil the pair escape from Smoke and jump a train to bring them back to town. They turn up at the council's big gala dinner with the evidence to trap Scarlett and her father but are side-tracked when Smoke abducts Lizzie and threatens to kill her unless he is given the documents Marat gave the boys. This leads to a show-down with MI5 agents firing off against each other and Phil and Sam literally caught in the middle. However right prevails and it even looks as it Sam will be getting back with Lizzie.