The clams had just been placed before him, and he was dipping the first one in the cocktail, when Madeline Spencer and the bald-headed man entered and passed to a table—reserved for them—at the far side of the room. Harleston knew that she saw him, though apparently she had not glanced his way. Here was another move in the game; but what the game, and what the immediate object?

His waiter whisked away the clam cocktail and put down the clear turtle.

As Harleston took up his spoon, a page spoke a word to Philippe, who motioned him to Harleston’s corner. The next instant the boy was there, a letter on the extended salver—then he faded away.

Harleston put aside the letter until he had finished his soup; then he picked it up and turned it over. It was a hotel envelope, and addressed simply: “Mr. Harleston,” in a woman’s handwriting—full and free, and, unusual to relate, quite legible. He ran his knife under the flap and drew out the letter. It was in the same hand that wrote the address.

“DEAR MR. HARLESTON:

“I’ve just seen someone whom I wish to avoid, so won’t you be good enough to dine with me in my apartment. It’s No. 972, and cosy and quiet—and please come at once. I’m waiting for you—with an explanation for my disappearance.

“EDITH CLEPHANE.”

“Hum!” said Harleston, and drummed thoughtfully on the table. Then he arose, said a word to Philippe as he passed, and went out to the elevator.

He got off at the ninth floor and walked down the corridor to No. 972. It was a corner and overlooked Pennsylvania Avenue and Fourteenth Street. He tapped lightly on the door; almost immediately it was opened by a maid—a very pretty maid, he noticed—who, without waiting for him to speak, addressed him as Monsieur Harleston and told him that Madame was expecting him.

Harleston handed the maid his hat, stick, and gloves, and crossed the private hall into the drawing-room.