“I understand that your father was working under great strain to speed up production. Colleagues who greatly admired him admit he was being driven hard, perhaps beyond endurance.”

“Nonsense!” she snapped back. “My father wasn’t casting church bells. He ran a gun factory. He demanded speed. And if it were too much for him he would have told me. We’ve been thick as thieves since my mother died.”

“But the tragedy of suicide,” Van Dorn interrupted, “is that the victim can see no other escape from the unbearable. It is the loneliest death.”

“He would not have killed himself in that manner.”

“Why not?” asked Isaac Bell.

Dorothy Langner paused before she answered, noting despite her grief that the tall detective was unusually handsome, with an air of elegance tempered by rugged strength. That combination was a quality she looked for in men but found rarely.

“I bought him that piano so he could take up music again. To relax him. He loved me too much to use my gift as the instrument of his death.”

Isaac Bell watched her compelling silvery blue eyes as she pleaded her case. “Father was too happy in his work to kill himself. Twenty years ago he started out replicating British 4-inch guns. Today his gun factory builds the finest 12s in the world. Imagine learning to build naval guns accurate at twenty thousand yards. Ten miles, Mr. Bell!”

Bell cocked his ear for a change of tone that might express doubt. He watched her face for telltale signs of uncertainty in her lyrical description of the dead man’s work.

“The bigger the gun, the more violent the force it has to tame. There is no room for error. You must bore the tube straight as a ray of light. Its diameter can’t vary a thousandth of an inch. Rifling demands the artistry of Michelangelo; shrinking the jacket, the precision of a watchmaker. My father loved his guns-all the great dreadnought men love their work. A steam-propulsion wizard like Alasdair MacDonald loves his turbines. Ronnie Wheeler up in Newport loves his torpedoes. Farley Kent his faster and faster hulls. It is joyous to be devoted, Mr. Bell. Such men do not kill themselves!”

Joseph Van Dorn intervened again. “I can assure you that Isaac Bell’s investigation has been as thorough as-”

“But,” Bell interrupted. “What if Miss Langner is right?”

His boss looked at him, surprised.

Bell said, “With Mr. Van Dorn’s permission, I will look further.”

Dorothy Langner’s lovely face bloomed with hope. She turned to the founder of the detective agency. Van Dorn spread his hands wide. “Of course. Isaac Bell will get right on it with the full support of the agency.”

Her expression of gratitude sounded more like a challenge. “That is all I can ask, Mr. Bell, Mr. Van Dorn. An informed appraisal of all the facts.” A sudden smile lit her face like a sunbeam, suggesting what a lively, carefree woman she had been before tragedy struck. “Isn’t that the least I can expect of a detective agency whose motto is ‘We never give up. Never!’ ”

“Apparently you’ve investigated us, too,” Bell smiled back.

Van Dorn walked her out to the reception room, repeating his condolences.

Isaac Bell went to the window that faced Pennsylvania Avenue. He watched Dorothy Langner emerge from the hotel with a slender redhead he had noticed earlier in the lobby. In any other company the redhead would be rated beautiful, but beside the gunner’s daughter she was merely pretty.

Van Dorn returned. “What changed your mind, Isaac? How she loved her father?”

“No. How she loved his work.”

He watched them hurry to the stop as a streetcar approached, pick up their long skirts, and climb aboard. Dorothy Langner did not look back. The redhead did, casting an appraising glance up at the Van Dorn windows as if she knew where to look.

Van Dorn was studying the photograph. “I never saw such a clear picture from film. Near as sharp as a proper glass plate.”

“Marion gave me a 3A Kodak. Fits right in my overcoat. You ought to make them standard equipment.”

“Not at seventy-five dollars each,” said the parsimonious Van Dorn. “They can make do with Brownies for a buck. What’s on your mind, Isaac? You look troubled.”

“I’m afraid you had better assign the accounting boys to look into her father’s financial affairs.”

“Why is that?”

“They found a wad of cash in his desk thick enough to choke a cow.”

“A bribe?” Van Dorn exploded. “A bribe? No wonder the Navy’s playing it close to the vest. Langner was a government employee empowered to choose from which foundry to buy steel.” He shook his head in disgust. “Congress hasn’t forgotten the clamor three years ago when the steel trust fixed the price of armor plates. Well, that explains why she had to relax him.”

“It looks,” Isaac Bell admitted, “like a clever man did something stupid, couldn’t face getting caught, and killed himself.”

“I’m surprised you agreed to look further.”

“She is a passionate young lady.”

Van Dorn looked at him curiously. “You are engaged, Isaac.”

Isaac Bell faced his boss with a guileless smile. For a man who was worldly in the many ways he would have to be to be a scourge of criminals, Joe Van Dorn was remarkably prim when it came to affairs of the heart. “The fact that I am in love with Marion Morgan does not render me blind to beauty. Nor am I immune to passion. What I meant, however, is that the strikingly attractive Miss Langner’s belief in her father is immense.”

“Most mothers,” Van Dorn retorted astringently, “and all daughters profess disbelief when their sons or fathers engage in criminal acts.”

“Something about that sample of his handwriting struck her oddly.”

“How’d you happen to find the suicide note?”

“The Navy had no clue how to proceed. So they left everything in place except the body and padlocked the door to keep the cops out.”

“How’d you get in?”

“It was an old Polhem.”

Van Dorn nodded. Bell had a way with locks. “Well, I’m not surprised the Navy had no clue how to proceed. In fact, I imagine they’re paralyzed with fear. They may have President Roosevelt hell-bent on building forty-eight new battleships, but there are plenty in Congress scheming to rein them in.”

Bell said, “I hate to leave John Scully in a lurch, but can you keep me off the Frye Boys case while I look into this?”

“A lurch is where Detective Scully likes to be,” Van Dorn growled.

“The man is too independent for my taste.”

“And yet, a clairvoyant investigator,” Bell defended his colleague. Scully, an operative not famous for reporting in regularly, was trailing a trio of violent bank robbers across the Ohio-Pennsylvania border. They had made a name for themselves by leaving notes written in the blood of their victims: “Fear the Frye Boys.” They had robbed their first bank a year ago in New Jersey, fled west, robbing many more, then laid low for the winter. Now they were rampaging east from Illinois in a string of bloody assaults on small-town banks. As innovative as they were vicious, they employed stolen automobiles to cross state lines, leaving local sheriffs in the dust.

“You will remain in charge of the Frye case, Isaac,” Van Dorn said sternly. “Until Congress gets around to funding some sort of national investigation bureau, the Justice Department will continue to pay us handsomely to capture criminals who cross state lines, and I don’t intend to let a maverick like Scully disappoint them.”

“As you wish, sir,” Bell replied formally. “But you did promise Miss Langner the full support of the agency.”

“All right! I’ll shift a couple of men Scully’s way-briefly. But you’re still in charge, and it should not take you long to confirm the veracity of Langner’s suicide note.”

“Can your friend the Navy Secretary get me a yard pass? I want to powwow with the Marines.”

“What for?” the boss smiled. “A rematch?”