Sam arrests the henchman of Stephen Warren, a local Mr Big, when he learns the whole of CID are on his payroll. Sam also visits his childhood home to interact with his mother (using name of "Bolan", a reference to the glam rock star Marc Bolan), who was being threatened by the landlord, one of Warren's men. Sam tries to help her by giving her some money and she mis-understands his gesture. When Sam tries to go all out after Warren, he finds himself in fix when Warren sets him up in a honey trap. The girl involved in the honey trap sees the error of her ways only to be murdered by Warren. Gene disagrees with Ray who says that if they don't play the game people get hurt and helps Sam bring down Warren finally putting his guilty conscience to rest. Sam also attempts to persuade Gene to swap his Red Rum for Tyler's Proud Percy in the Grand National sweepstakes.