Billy came alive. Now he had to lie low and act as if Costello had said nothing. Finally they got to the delivery point. Billy suggested that he act as lookout; Costello immediately said yes. Billy returned to a critical road junction and hid. Eventually two police cars approach, but were manoeuvring for a different exit. Billy gambled. He jumped out of hiding, sprinted into the intersection and almost into the path of the leading car, waving his arms.

The car stopped and the cops got out, guns ready. As one started to speak, Billy shouted, "I'm Queenan's undercover in Costello's gang. They're not far way. The mole is Staff Sergeant Sullivan. Let me in the car" . Billy repeated himself. The cops were almost in shock. One radioed Billy's directions and the mole's identity, then after removing Billy's gun they let him squeeze in the back.

Of cause Costello was gone by the time they arrived, but the drug suppliers van was still there. No doubt they were "dividing up" the cash - Costello would have told them to wait and so be an unwitting delay if the police were close behind. After a brief shoot-out the cops searched the van. Finding the remaining drugs and the money which Costello had paid vindicated Billy's story.

The ride back to the SIU was uneventful except that the cops did not quite know what to make of Billy. However, they did have questions regarding what had happened to Queenan and why Sullivan was the mole. Normally Billy would have been quite reticent. Now however, Billy realised that he might need all the friends, or at least sympathetic hearing, that he could get. In return Billy discovered that there had been a tail, and that Sullivan, The Apple of Captain Ellerby's Eye, was responsible.