The story told by Polly Barnard, and supplemented by Petch, revealed very clearly the dastardly trick practised by Voles the previous evening, while the dodge of smearing out two of the figures on the automobile’s license plate explained the success attained in traversing the streets unnoticed by the police.

Steingall was inclined to theorize.

“The finding of the car puzzled me at first, I admit,” he said. “Now, assuming that Mick the Wolf has not sent us off on a wild-goose chase, the locality of the steamer explains it. Voles drove all the way to the East Side, quitted the car in the neighborhood of the pier, deposited Miss Bartlett on board the vessel under some plausible pretext, and actually risked the return journey into the only part of New York where the missing auto might not be noticed at once. He’s a bold rogue, and no mistake.”

But Carshaw answered not. The chief glanced at him sideways, and smiled. There was a lowering fire in his companion’s eyes that told its own story. Thenceforward, the run was taken in silence. But Steingall had decided on his next move. When they neared Smith’s Pier Carshaw wished to drive straight there.

“Nothing of the sort,” was the sharp official command. “We have failed once. Perhaps it was my fault. This time there shall be no mistakes. Turn along the next street to the right. The precinct station is three blocks down.”

Somewhat surprised by Steingall’s tone, the other obeyed. At the station-house a policeman, called from the men’s quarters, where he was quietly reading and smoking, stated that he was on duty in the neighborhood between eight o’clock the previous evening and four o’clock that morning. He remembered seeing a car, similar to the one standing outside, pass about 9.15 P.M. It contained two people, he believed, but could not be sure, as the screens were raised owing to the rain. He did not see the car again; some drunken sailors required attention during the small hours.

The local police captain and several men in plain clothes were asked to assemble quietly on Smith’s Pier. A message was sent to the river police, and a launch requisitioned to patrol near the Wild Duck.

Finally, Steingall, who was a born strategist, and whose long experience of cross-examining counsel rendered him wary before he took irrevocable steps in cases such as this, where a charge might fail on unforeseen grounds, made inquiries from a local ship’s chandler as to the Wild Duck, her cargo, and her destination.

There was no secret about her. She was loading with stores for Costa Rica. The consignees were a syndicate, and both Carshaw and Steingall recognized its name as that of the venture in which Senator Meiklejohn was interested.

“Do you happen to know if there is any one on board looking after the interests of the syndicate?” asked the detective.