BY NOW THEY WERE WELL into the third day of the investigation. The case plodded its slow way on. More people were questioned and their answers checked, but they were no nearer to a solution. The murder weapon still hadn’t turned up. Rafferty was beginning to doubt they’d ever find it. There had certainly been no trace of it in Primrose Avenue or anywhere in the immediate vicinity. The search for this elusive item had now spread further afield. Time, he thought, to question the four youths again. They were the only ones on the spot both before and after the murder. The only ones able if not willing to tell them who else had entered the alley. Who were they protecting? The only thing he could think of was that the youths had some connection to Malcolm Forbes. He seemed just the sort of man