Duvall gazed at the result in surprise, then taking from his pocketbook the torn half of the card he had found the night before in the cab, he laid it beside the fragments on the desk. The two fitted exactly. The name and address were both plain. Evidently the woman who had interviewed the cabman, Leary, and the woman who had escaped from the cab were one and the same. She had taken a card from her purse, torn it in half, written the "Alice Watson" address that she gave the cabman on one half, and thrust the other back into her handbag. Later, when Duvall had attempted to examine the contents of the bag, the bit of card had fallen to the floor. All that was sufficiently clear. Grace, looking over her husband's shoulder, read the completed name and address. "Miss Marcia Ford," she exclaimed. "162 West 57th Street. Why, Richard, there is the name and address of the woman you want." "It may be her address," her husband remarked, gloomily, "but it certainly isn't her name." "But--Why not?" "Because I saw Marcia Ford this morning, and _she isn't the woman_!" Grace looked at him in astonishment. "Are you sure?" she cried. "Perfectly. Marcia Ford is not the one we are after." "Then how do you explain the woman having a card with that name on it?" "I don't explain it--unless," he paused for a moment in thought. "Unless this Ford woman, and the other one, are in league with each other, which might account for the latter having her card in her purse." "And the address! Is that where Marcia Ford lives?" "I don't know. It may be where they both live, for all I can tell. I only hope it is." He rose and took up his hat. "Where are you going?" Grace asked. "To 162 West 57th Street." Suddenly he took his wallet from his pocket, snatched a second card from it, and after looking at it for a moment, gave an exclamation of delighted surprise. "What is it?" Grace asked quickly. He thrust the card into her hand. Grace glanced at it, without quite understanding what it meant. "I don't see what you mean," she exclaimed. "The thing is clear enough. The card I have just given you belongs to Miss Ruth Morton." "I see that, but----" "Then surely you must see that Miss Morton's apartment also is on Fifty-seventh Street, and just two doors from the address of Miss Marcia Ford!" CHAPTER XIII