Rebecca wants to contact her attorneys to help Yvette. Holmes points out that Yvette was still in the coma after killing Amy, implying that she still had someone to kill. Specifically, Rebecca. "You mind that big heart, Miss Ellison. It'll beat longer." Rebecca looks thoughtful and gracefully drops out of the story.
Gregson says Bell is buying drinks, and Bell says it's under orders. But he thanks Holmes and offers a handshake. I shall look forward to seeing how Bell reacts to Holmes's next crazy theory.
Brownstone. Holmes complains that Watson's dinner for the two of them consists of "more malodorous takeout." Watson wants to talk about the rehab meeting. She points out that Holmes was listening, and it helped because he wouldn't have thought of the doctor without it. Holmes thanks her. She asks if he closes himself off as a form of penance, "for what happened in London. Being addicted." She thinks people can do penance without even knowing it. Holmes: "You always know it, Watson. If you didn't, it wouldn't be penance."
Later that night. Holmes looks at his violin case. Watson sits in bed. He has another violin. I find it unlikely that it would be in tune. Watson, who is reading with her glasses in her hand, hears him playing violin. I can only imagine that the neighbors are furious at this development.