WHO IS THAT OFFICER?” ISAAC BELL DEMANDED OF THE Protection Services operative assigned to guard Farley Kent’s drawing loft in the Brooklyn Navy Yard.

“I don’t know, Mr. Bell.”

“How did he get in here?”

“He knew the password.”

Van Dorn Protection Services had issued passwords for each of the Hull 44 dreadnought men it was guarding. After getting past the Marines guarding the gates, a visitor still had to prove he was expected by the individual he claimed to be visiting.

“Where is Mr. Kent?”

“They’re all in the test chamber working on that cage-mast model,” the Protection Services operative answered, pointing across the drawing loft at a closed door that led to the laboratory. “Is there something wrong, Mr. Bell?”

“Three things,” Bell answered tersely. “Farley Kent is not here, so he does not seem to have expected that officer to visit. The officer has been studying Kent’s drawing board since I walked in. And in case you haven’t noticed, he is wearing the uniform of the Czar’s Navy.”

“Them blue uniforms look all the same,” the operative replied, reminding Bell that few PS boys possessed the brains and moxie to climb the ladder to full-fledged Van Dorn detective. “Besides, he’s carrying them rolled-up drawings like they all do. You want I should question him, Mr. Bell?”

“I’ll do it. Next time someone walks in unexpected, assume he’s trouble until you learn otherwise.”

Bell strode across the big loft past rows of drawing boards that were usually occupied by the naval architects testing the cage mast. The man in the Russian officer’s uniform was so engrossed in Farley Kent’s drawing that he gave a startled jump and dropped the rolls he had tucked under his arm when Bell said, “Good morning, sir.”

“Oh! I do not hear approach,” he said in a heavy Russian accent, scrambling to pick them up.

“May I have your name, please?”

“I am Second Lieutenant Vladimir Ivanovich Yourkevitch of His Majesty Czar Nicolas’s Imperial Russian Navy. And to whom do I have the honor-”

“Have you an appointment here, Lieutenant Yourkevitch?” The Russian, who looked barely old enough to shave, bowed his head. “Sadly, no. I am hoping to meet with Mr. Farley Kent.”

“Does Mr. Kent know you?”

“Not yet, sir.”

“Then how did you get in here?”

Yourkevitch smiled, disarmingly. “With entitled demeanor, impeccable uniform, and crisp salute.”

Isaac Bell did not smile back. “That might get you past the Marines guarding the gate. But where did you get the password to go to Kent’s drawing loft?”

“In bar outside gates, I meet Marine officer. He tells me password.”

Bell beckoned the Protection Services operative.

“Lieutenant Yourkevitch will sit on that stool, away from this drawing board, until I return.” To Lieutenant Yourkevitch he said, “This gentleman is fully capable of knocking you to the floor. Do as he tells you.”

Then Bell crossed the loft and pushed open the door to the test chamber.

A dozen of Kent’s staff were circled around a ten-foot-tall model of an experimental battleship cage mast. The young naval architects held wire snips, micrometers, slide rules, notepaper, and tape measures. The round, freestanding structure, which stood on a dolly, was made of stiff wires that spiraled from base to top in a counterclockwise twist and were braced at intervals by horizontal rings. It represented, in miniature, a one-hundred-twenty-foot-high mast made of lightweight tubing and was correct in every detail down to the mesh platforms within some of the rings, electric leads and voice pipes running from the spotters’ top to the fire director’s tower, and tiny ladders angling up the interior.

Two of Kent’s architects held ropes attached to opposite sides of the round base. A tape measure strung between the walls passed next to the top. An architect on a stepladder watched the tape closely. Farley Kent said, “Portside salvo. Fire!”

The architect on the left side jerked his rope, and the man watching the tape called out how much the tower had swayed. “Six inches!” was recorded.

“At twelve-to-one, that’s six feet!” said Kent. “The spotters on top better hold on tight when the ship fires her main turrets. On the other hand, a tripod mast will weigh one hundred tons, while our cage of redundant members will weight less than twenty-a huge savings. O.K., let’s measure how she sways after being hit by several shells.” Wielding a wire snips, he severed at random two of the spiraled uprights and one of the rings.

“Ready!”

“Wait!” An architect sprang up the ladder and propped a sailor doll with red cheeks and a straw hat in the spotting top.

The test chamber rang with laughter, Kent’s the loudest of all. “Starboard salvo. Fire!”

The rope was jerked, the top of the mast swayed sharply, and the doll flew across the room.

Bell caught it. “Mr. Kent, may I see you a moment?”

“What’s the matter?” asked Kent as he snipped another vertical wire and his assistants watched carefully to see the effect on the mast.

“We may have caught our first spy,” Bell said in a low voice. “Could you come with me, please?”

Lieutenant Yourkevitch jumped from the stool before the Van Dorn Protection Services operative could stop him and grabbed Kent’s hand. “Is honor to meet, is great honor.”

“Who are you?”

“Yourkevitch. From St. Petersburg.”

“Naval Staff Headquarters?”

“Of course, sir. Baltic Shipyard.”

Kent asked, “Is it true that Russia is building five battleships bigger than HMS Dreadnought?”

Yourkevitch shrugged. “There is hope for super-dreadnoughts, but Duma perhaps say no. Too expensive.”

“What are you doing here?”

“The idea is that I meet legend Farley Kent.”

“You came all the way here just to meet me?”

“To show. See?” Yourkevitch unrolled his plans and spread them over Kent’s table. “What do you think? Improvement of form for body of ship?”

While Farley Kent studied Yourkevitch’s drawings, Bell took the Russian officer aside, and said, “Describe the Marine officer who gave you the password.”

“Was medium-sized man in dark suit. Old like you, maybe thirty. Very neat, very trim. Mustache like pencil. Very… what is word-precise!”

“Dark suit. No uniform?”

“In mufti.”

“Then how did you know he was a Marine officer?”

“He told me.”

Isaac Bell’s stern expression grew dark. He spoke coldly. “When and where are you supposed to report back to him?”

“I don’t understand.”

“You must have agreed to report to him what you saw here.”

“No. I do not know him. How would I find him?”

“Lieutenant Yourkevitch, I am having difficulty believing your story. And I don’t suppose it will do your career in the Czar’s Navy any good if I turn you over to the United States Navy as a spy.”

“A spy?” Yourkevitch blurted. “No.”

“Stop playing games with me and tell me how you learned the password.”

“Spy?” repeated the Russian. “I am not spy.”

Before Bell could reply, Farley Kent spoke up. “He doesn’t need to spy on us.”

“What do you mean?”

“I mean that we should spy on him.”

“What are you talking about, Mr. Kent?”

“Lieutenant Yourkevitch’s ‘improvement of form for body of ship’ is a hell of a lot better than it looks.” He gestured at various elements of the finely wrought drawing. “At first glance it appears bulky amidships, fat even, and weirdly skinny fore and aft. You could say it resembles a cow. In fact, it is brilliant. It will allow a dreadnought to toughen its torpedo defense around machinery and magazines, and increase armament and coal capacity even as it attains greater speed for less fuel.”

He shook Yourkevitch’s hand. “Brilliant, sir. I would steal it, but I would never get it approved by the dinosaurs on the Board of Construction. It is twenty years ahead of its time.”