"Seems purposeless, insane, doesn't it?" I put in.
"Not when he always takes something--often more valuable than money," returned Craig.
He leaned back in the car and surveyed the glimpses of bay and countryside as we were whisked by the breaks in the trees.
"Walter," he remarked meditatively, "have you ever considered the possibilities of blackmail if the right sort of evidence were obtained under this new 'white-slavery act'? Scandals that some of the fast set may be inclined to wink at, that at worst used to end in Reno, become felonies with federal prison sentences looming up in the background. Think it over."
Stuyvesant Verplanck had telephoned rather hurriedly to Craig earlier in the day, retaining his services, but telling only in the briefest way of the extent of the depredations, and hinting that more than jewelry might be at stake.
It was a pleasant ride, but we finished it in silence. Verplanck was, as I recalled, a large masterful man, one of those who demanded and liked large things--such as the estate of several hundred acres which we at last entered.
It was on a neck of land with the restless waters of the Sound on one side and the calmer waters of the bay on the other. Westport Bay lay in a beautifully wooded, hilly country, and the house itself was on an elevation, with a huge sweep of terraced lawn before it down to the water's edge. All around, for miles, were other large estates, a veritable colony of wealth.
As we pulled up under the broad stone porte-cochere, Verplanck, who had been expecting us, led the way into his library, a great room, literally crowded with curios and objects of art which he had collected on his travels. It was a superb mental workshop, overlooking the bay, with a stretch of several miles of sheltered water.
"You will recall," began Verplanck, wasting no time over preliminaries, but plunging directly into the subject, "that the prominent robberies of late have been at seacoast resorts, especially on the shores of Long Island Sound, within, say, a hundred miles of New York. There has been a great deal of talk about dark and muffled automobiles that have conveyed mysterious parties swiftly and silently across country.
"My theory," he went on self-assertively, "is that the attack has been made always along water routes. Under shadow of darkness, it is easy to slip into one of the sheltered coves or miniature fiords with which the north coast of the Island abounds, land a cut-throat crew primed with exact information of the treasure on some of these estates. Once the booty is secured, the criminal could put out again into the Sound without leaving a clue."
He seemed to be considering his theory. "Perhaps the robberies last summer at Narragansett, Newport, and a dozen other New England places were perpetrated by the same cracksman. I believe," he concluded, lowering his voice, "that there plies to-day on the wide waters of the Sound a slim, swift motor boat which wears the air of a pleasure craft, yet is as black a pirate as ever flew the Jolly Roger. She may at this moment be anchored off some exclusive yacht club, flying the respectable burgee of the club--who knows?"
He paused as if his deductions settled the case so far. He would have resumed in the same vein, if the door had not opened. A lady in a cobwebby gown entered the room. She was of middle age, but had retained her youth with a skill that her sisters of less leisure always envy. Evidently she had not expected to find anyone, yet nothing seemed to disconcert her.
"Mrs. Verplanck," her husband introduced, "Professor Kennedy and his associate, Mr. Jameson--those detectives we have heard about. We were discussing the robberies."
"Oh, yes," she said, smiling, "my husband has been thinking of forming himself into a vigilance committee. The local authorities are all at sea."
I thought there was a trace of something veiled in the remark and fancied, not only then but later, that there was an air of constraint between the couple.
"You have not been robbed yourself?" queried Craig tentatively.
"Indeed we have," exclaimed Verplanck quickly. "The other night I was awakened by the noise of some one down here in this very library. I fired a shot, wild, and shouted, but before I could get down here the intruder had fled through a window, and half rolling down the terraces. Mrs. Verplanck was awakened by the rumpus and both of us heard a peculiar whirring noise."
"Like an automobile muffled down," she put in.
"No," he asserted vigorously, "more like a powerful motor boat, one with the exhaust under water."
"Well," she shrugged, "at any rate, we saw no one."
"Did the intruder get anything?"
"That's the lucky part. He had just opened this safe apparently and begun to ransack it. This is my private safe. Mrs. Verplanck has another built into her own room upstairs where she keeps her jewels."
"It is not a very modern safe, is it?" ventured Kennedy. "The fellow ripped off the outer casing with what they call a 'can- opener.'"
"No. I keep it against fire rather than burglars. But he overlooked a box of valuable heirlooms, some silver with the Verplanck arms. I think I must have scared him off just in time. He seized a package in the safe, but it was only some business correspondence. I don't relish having lost it, particularly. It related to a gentlemen's agreement a number of us had in the recent cotton corner. I suppose the Government would like to have it. But--here's the point. If it is so easy to get in and get away, no one in Bluffwood is safe."
"Why, he robbed the Montgomery Carter place the other night," remarked Mrs. Verplanck, "and almost got a lot of old Mrs. Carter's jewels as well as stuff belonging to her son, Montgomery, Junior. That was the first robbery. Mr. Carter, that is Junior-- Monty, everyone calls him--and his chauffeur almost captured the fellow, but he managed to escape in the woods."
"In the woods?" repeated Craig.
Mrs. Verplanck nodded. "But they saved the loot he was about to take."
"Oh, no one is safe any more," reiterated Verplanck. "Carter seems to be the only one who has had a real chance at him, and he was able to get away neatly."
"But he's not the only one who got off without a loss," she put in significantly. "The last visit--" Then she paused.
"Where was the last attempt?" asked Kennedy.
"At the house of Mrs. Hollingsworth--around the point on this side of the bay. You can't see it from here."
"I'd like to go there," remarked Kennedy.
"Very well. Car or boat?"
"Boat, I think."
"Suppose we go in my little runabout, the Streamline II? She's as fast as any ordinary automobile."
"Very good. Then we can get an idea of the harbor."
"I'll telephone first that we are coming," said Verplanck.
"I think I'll go, too," considered Mrs. Verplanck, ringing for a heavy wrap.
"Just as you please," said Verplanck.
The Streamline was a three-stepped boat which. Verplanck had built for racing, a beautiful craft, managed much like a racing automobile. As she started from the dock, the purring drone of her eight cylinders sent her feathering over the waves like a skipping stone. She sank back into the water, her bow leaping upward, a cloud of spray in her wake, like a waterspout.
Mrs. Hollingsworth was a wealthy divorcee, living rather quietly with her two children, of whom the courts had awarded her the