As Forrester assisted his mother down the steps he glanced hastily around. The fog was still heavy. He could make out nothing save the taxicab at the curb, but just as he was giving the address to the taxi driver he noticed a small man of slight build appear out of the fog. This man stopped quite near to him and lit a cigarette. Aside from noting the man’s build and the fact that he wore a cap and had very dark hair, Forrester could make out no other details, for the man stood with his back to Forrester and the lighted match really served only to throw him out in silhouette. Forrester entered the cab and it started off. As he leaned back he reflected that the man he had seen was of too small a stature to be a detective. His act of stopping so close to them might have been mere accident, but to Forrester the thing had a significance which could not be overlooked. He was confident that this was one of the men they wanted. He hoped that the police, although not visible in the fog, had arrived as promised. If so, he felt that their problems were pretty close to a final solution. They reached Bellevue Place without incident. The whir of the taxicab’s engine had effectually drowned any sound of pursuit and though he had glanced back several times, Forrester had been able to see nothing save a wall of fog back of the cab. Yet somewhere in that fog-draped street he was sure the murderers’ car was lurking. There appeared to be no one around as they left the cab, but Forrester, after his mother and sister had gone into the house, lingered for a moment in the dark doorway. He could hear the hum of the taxicab’s engine as it passed down the street toward the Lake Shore Drive. Otherwise the night was silent. Suddenly Forrester heard the roar of opened mufflers in the other direction, and the next instant two black shapes passed swiftly by through the fog. Red flashes leaped out of the darkness and sharp reports resounded through the street as they passed the door. "The police are on the job!" exulted Forrester. He hastily stepped inside and closed the door, for his army experience had shown him the danger of stray bullets. CHAPTER V—THE HAUNTED TREE Twice before he retired that night Forrester sought information from the police. By one o’clock, however, when no report had been turned in, he decided to wait until morning. Early Wednesday morning he called the detective bureau on the telephone to find out what the police had accomplished. The voice at the other end of the wire was apologetic. "We’re sorry, Mr. Forrester, but the men got away from us. Had it been any other kind of a night we would have had them, sure. The fog prevented the detectives from seeing the car distinctly, so that after it turned into the Lake Shore Drive, and mingled with other cars, it was impossible to pick it up again.