But what of the fifth red domino, the hostess of the great ball?

Time had hung rather heavily on her hands. No one recognized her, and, not being a graceful dancer, she was somewhat neglected.

CHAPTER XX

CONCLUSION

At about half-past eleven Barbara concluded that she had better deliver the letter to Mrs. De Lancey Smythe. Summoning a bellboy, she went to the woman’s room. On the way she showed the boy a dollar bill.

“This will be yours,” she said, “if you do exactly as I tell you. If, when you deliver this note, the recipient should ask who gave it to you, say ‘some one in a domino,’ then come away quickly. Do you understand?”

“Yes, ma’am,” replied the boy, his eyes on the dollar bill.

In a few minutes the room was reached. Mrs. De Lancey Smythe, in a black silk domino and mask, responded to the knock on the door.

“Now,” whispered Barbara, who kept out of sight, and the boy delivered the note which read: