"I continued to believe that until the Princess Petrovska came to me with a note from Mr. Grell bidding me trust her. I gave her my jewels, and she told me he could communicate with me by cipher. I returned to my first idea that he had killed Goldenburg--the Princess told me the murdered man's name--rather than submit to blackmail. I determined to do all I could to help him, for, murderer or not, I loved him--I loved him. You know how our attempt to communicate by cipher failed. "A day or two ago he sent me a note--a mysterious note--saying we were both in danger. I could not understand that part of it, but it was clear he wanted money. I could not get it except by putting my father's name to a cheque. You know all about that. I took a taxicab and arranged to meet him at Putney." "You went to the General Post Office before that," interposed Foyle. "Yes, I wanted to order a motor-car to meet us at Kingston. I thought it safer to do it from a public-call office so as to leave as little trace as possible. I picked Mr. Grell up at Putney, and gave him the money. Neither of us referred directly to the murder during the journey. He told me that he was making for his place in Sussex, and should there make a plan for getting out of the country. He argued that the less I knew of details the better." "A reasonable feeling, under the circumstances," murmured Foyle. And then, with a smile, "Your finger-prints on the dagger have been partly responsible for a lot of bother, Lady Eileen. If you had followed my advice at first--but it's no use harping on that. You have believed Mr. Grell to be the murderer, I suppose, and made your own confession to shield him. I don't know that I oughtn't to congratulate you both, for he has certainly made enormous sacrifices, and taken enormous risks to shield you." "To shield _me_?" Her astonishment was palpable. "To shield you. He had at least as much reason--if you'll forgive me saying so--to believe you guilty as you had to think he was a murderer. It was he--if my guess is correct--who opened the door while you were stooping over the murdered man. He must have jumped to the conclusion that you had at that moment killed the man, and took his own way of diverting suspicion from you. That is the only explanation that appears plausible to me." A new light of happiness was in her grey eyes, and she smiled. The direct common sense of the detective had brought home to her the motive for the portion of the mystery that until that moment had perplexed her. Robert Grell had laid down everything for her sake. And she had never thought--never dreamed.... The voice of Foyle, apparently distant and far away, broke in on her thoughts.