“But don’t go away with the wrong idea,” she hurried on, her eyes sparkling with fervor. “Louey may not have got here till after midnight, but if you think he knows anything about Margy’s death, you’re crazy. He was through with Margy a year ago. Why, he hardly knew she was on earth. And if any fool cop gets the notion in his head that Louey was mixed up in the affair, I’ll alibi him—so help me God!—if it’s the last thing I do in this world.”

“I like you more and more,” said Vance; and when she gave him her hand at parting he lifted it to his lips.

As we rode down-town Vance was thoughtful. We were nearly to the Criminal Courts Building before he spoke.

“The primitive Alys rather appeals to me,” he said. “She’s much too good for the oleaginous Mannix. . . . Women are so shrewd—and so gullible. A woman can read a man with almost magical insight; but, on the other hand, she is inexpressibly blind when it comes to her man. Witness sweet Alys’s faith in Mannix. He probably told her he was slaving at the office Monday night. Naturally, she doesn’t believe it; but she knows—knows, mind you—that her Louey just couldn’t have been concerned in the Canary’s death. Ah, well, let us hope she’s right and that Mannix is not apprehended—at least not until her new show is financed. . . . My word! If this being a detective involves many more revues, I shall have to resign. Thank Heaven, though, the lady didn’t attend the cinema Monday night!”

When we arrived at the District Attorney’s office we found Heath and Markham in consultation. Markham had a pad before him, several pages of which were covered with tabulated and annotated entries. A cloud of cigar-smoke enveloped him. Heath sat facing him, his elbows on the table, his chin resting in his hands. He looked pugnacious but disconsolate.

“I’m going over the case with the Sergeant,” Markham explained, with a brief glance in our direction. “We’re trying to get all the salient points down in some kind of order, to see if there are any connecting links we’ve overlooked. I’ve told the Sergeant about the doctor’s infatuation and his threats, and of the failure of Traffic Officer Phipps to identify Cleaver. But the more we learn, the worse, apparently, the jumble grows.”

He picked up the sheets of paper and fastened them together with a clip.

“The truth is, we haven’t any real evidence against anybody. There are suspicious circumstances connected with Skeel and Doctor Lindquist and Cleaver; and our interview with Mannix didn’t precisely allay suspicions in his direction, either. But when we come right down to it, what’s the situation?—We’ve got some finger-prints of Skeel, which might have been made late Monday afternoon.—Doctor Lindquist goes berserk when we ask him where he was Monday night, and then offers us a weak alibi. He admits a fatherly interest in the girl, whereas he’s really in love with her—a perfectly natural bit of mendacity.—Cleaver lent his car to his brother and lied about it, so that I’d think he was in Boonton Monday at midnight.—And Mannix gives us a number of shifty answers to our questions concerning his relations with the girl. . . . Not an embarrassment of riches.”

“I wouldn’t say your information was exactly negligent,” observed Vance, taking a chair beside the Sergeant. “It may all prove devilish valuable if only it could be put together properly. The difficulty, it appears to me, is that certain parts of the puzzle are missing. Find ’em, and I’ll warrant everything will fit beautifully—like a mosaic.”

“Easy enough to say ‘find ’em,’ ” grumbled Markham. “The trouble is to know where to look.”