Bell found him on the floor behind his workbench, his eyes bulging wide open, fixed intently on nothing. Bell lighted a lamp and looked at him closely. The mechanician had been garroted with a wire that had cut his head half off his neck. It looked like the Acrobat had silenced his accomplice with the same thin cable he had wrapped around the neck of the Golden State Limited express messenger he had murdered in New Mexico. It was also the same cable he had used to vault over the locomotive and to “fly” from the Mauretania’s boat deck.

Isaac Bell spoke out loud, addressing the Acrobat as if the murderer were still in the caboose.

“I am worrying you,” he said, reviewing in his mind the many strands of his investigation and wondering which had alarmed the murderer. “I am making you afraid.”

The Acrobat apparently saw those strands as forming a net. Which ones? Bell wondered. Which of the many strands had spooked him?

Grady Forrer was pursuing a Hamburg Bankhaus–Imperial Film connection. Andrew Rubenoff had connected Hamburg Bankhaus to Leipzig Organ & Piano and was now hunting Imperial’s foreign bankers. The Van Dorn field offices had exposed Leipzig Organ for a sham. Bell himself had tracked Leipzig’s Fritz Wunderlich to Denver, and now the men watching the consulates had the German’s likeness. Joe Van Dorn was working his Washington, D.C., contacts to establish German consulate connections. Larry Saunders was probing City Hall for the Imperial Building floor plans. Texas Walt had covered Imperial Protection and was currently employed as an extra inside Imperial’s penthouse studios.

If the Acrobat had ordered the murder of Art Curtis in Berlin, then he knew the Van Dorns were after him. The attacks on the Van Dorn apprentices confirmed that. But today’s sabotage of Bell’s motorcycle indicated that the Acrobat had penetrated Bell’s “insurance man” disguise, too, and saw him either as aligned with the Van Dorn Detective Agency or an actual agent of the outfit.

“I still don’t know what you’re up to. But I’m closer than I think.”

Then it struck Bell hard. If—as seemed likely, though not close to proven—Imperial Film was mixed up with the Acrobat and Krieg Rüstungswerk, then Marion’s job at Imperial was no coincidence, but rather the Acrobat’s cold-blooded ace in the hole.

BELL RODE THE ANGELS FLIGHT funicular railway two blocks up a steep grade to the residential neighborhood on top of Bunker Hill, where he had rented a mansion after Marion took the job Irina Viorets had offered at Imperial. Concealing his limp, he climbed the back steps and bounded into the kitchen.

“Just in time for our first married home-cooked meal,” Marion greeted him. “Oh, Isaac, what a wonderful day this is.” She hugged him hard and kissed him. “Would you like a cocktail for whatever you’ve done to your poor foot?”