He bounded up four flights of stairs, with the soldiers clattering behind, reached the roof, and stepped outside just as Joe Mudd’s red Liberator roared around the building, yards ahead of Sir Eddison-Sydney-Martin’s blue Curtiss Pusher.

Bell ran to the elevator house. The door was locked.

“Shoot it open.”

The soldiers looked to their sergeant.

“Do it!” he ordered. Six men pumped three rounds of rifle fire into the door, bursting it open. Bell bounded in first, pistol in hand. The machine room was empty. He looked through the steel grate floor. He could see into the open, unroofed car, which was still at the top of the shaft immediately under him. It, too, was empty. Harry Frost had disappeared.

“Where is he?” shouted the sergeant. “I don’t see anyone. Are you sure you saw him in here?”

Isaac Bell pointed at an open trapdoor in the floor of the car.

“He lowered himself down the traction rope.”

“Impossible. There’s no way a man could hold on to that greasy cable.”

Bell dropped into the elevator car and looked down through the trap. His sharp eyes spotted twin grooves in the grease that thickly coated the braided steel wire that formed the traction rope. He showed the sergeant.

“Where the heck did he get a cable brake?”

“He came prepared,” said Bell, climbing up the side of the car to run for the stairs.

“Any idea who he was?”

“Harry Frost.”

Fear flickered across the old soldier’s face. “We were chasing Harry Frost?”

“Don’t worry. He won’t get far.”

“Chicago’s his town, mister.”

“It’s our town, too, and Van Dorns never give up.”

Chapter 26

26

THAT EVENING, Isaac Bell parked a big Packard Model 30 within pistol shot of the three-story mansion on Dearborn Street that housed the Everleigh Club, the most luxurious bordello in Chicago. He kept the bill of a chauffeur’s cap low over his eyes and watched two heavyset Van Dorns climb the front steps. Out-of-town men who would not be recognized by the doorman and floor managers, they were dressed in evening clothes to appear to be customers wealthy enough to patronize the establishment. They rang the bell. The massive oak door swung open, the detectives were ushered in, and it swung shut behind them.

Bell watched the sidewalks for cops and gangsters.

Stealthy movement beside a pool of streetlamp light caught his attention. A slight figure, a young man in a wrinkled sack suit and bowler hat, eased past the light, then veered across the sidewalk on a route that took him close enough to the Packard for Bell to recognize him.

“Dash!”

“Hello, Mr. Bell.”

“Where the devil did you come from?”

“Mr. Bronson gave me permission to report in person. Got me a free ride guarding the Overland Limited’s express car.”

“You’re just in time. Do you have your revolver?”