So! What could Drew's motive be to kill Vivian? And how would it compel Callie to leave her husband? How does the one thing lead to the other? Well, Watson suggests that it could go in the other direction.
Interrogation room. Drew is confronted with the subway-pushing case, and the evidence that his army jacket had that patch. Drew claims to have given his old army jacket to Goodwill. Holmes says that his wife left him once before. She made the video the first time she left him. When she said "the woman with the flowers," she was talking about a woman named Anne Peters who got shoved into a train by some kids. She was carrying flowers she picked from her own garden. Drew gave Vivian Tully the flowers to recreate a situation that matched the wording of the recording his wife had already made. He just needed "a pushing involving a woman holding flowers." Drew says Watson is just some crazy woman. Gregson asks if he's sticking to his story that the video is only six months old. He is. But they have access to her email. He deleted it, but they found it archived in the server. The video was originally sent eighteen months ago, just after the other subway pushing. Holmes gives Watson an approving nod.
In bed, Watson gets a call from Emily, who is walking past "Hat Restaurant." That's probably a real place, but it sounds like a set decorator who didn't have time to think of a good name. Watson tells Emily that she was out of line by stomping out. Emily says her editor just assigned her the story about the case Watson just solved. Holmes knocks. An old colleague asked him to look at some files, and he got the murderer in seconds. He wants to see how she does. Watson finishes with Emily.
Then she changes her job on Facebook (not real Facebook, obviously) from "Sobriety Counselor" to "Consulting Detective."