With that admission, Malcolm relaxes a fraction. He can't believe that Sherlock actually said it out loud. "You're not going to lose her," Malcolm tells her. Not now and not after he and Joan are married. He already knew how important Joan was to Sherlock, but this solidifies it for him. There's room in her life for both of them.

He takes a deep breath. "Yes. The senior senator from New Hampshire. Joan had a contact who gave her some photos."