Brownstone. Watson comes home and glares at Holmes for hiring an actor. He claims it was a prank well played, since he had to be absolutely certain his father wouldn't show. She says his father emailed that he was called away. Holmes catches her up about the sabotage. He wants to go confront a suspect and wants her to come with him: "I waited for you. Hmm? You should be grateful!" She goes to bed and Holmes says she should have trusted him. She's mad that he hasn't shared any of his personal history with him.
Holmes and Bell go to bother Mr. Owen Barts, one of the pilots. Joe Newell's widow said Barts and Newell had an argument. Apparently Bart sniped a client from him. Holmes says that since it was sabotage, it could have been someone with a grudge against the company and not have anything to do with the passengers at all. And Barts consistently recorded a weight precisely 66 pounds too much when he came back from Miami. That's exactly 30 kilos and, as we all know, cocaine comes in kilograms! Holmes says Joe, with his military background, would have wanted to go to the police. But Barts was nowhere near the hangar this morning. Don't believe him? He says they should go see his boss, Mr. Charles! Then he shuts the door and they leave.
Watson wakes up in bed, and Holmes is in a chair staring at her. Creepy! He admits that he has a preoccupation with plane crashes. Not that he's phobic; he just sees too much on a plane. He analyzes the pilot and the mechanic. Watson is still cross with him. He claims he was attempting to demonstrate his trust in her by telling her that stuff about having a fascination with plane crashes. Watson: "How? By telling me something I already figured out?" Holmes's phone rings to interrupt them. Charles Cooper is on his way to the station.
It's the guy who showed them the security camera footage. Holmes again has his nose covered with his scarf, saying it's like Cooper bathed in glue! Watson says Cooper looks pale. He does! Pale and waxy. Cooper's says, He wanted me to tell you guys that he was with me at the time of Mr. Gerard's murder. But he wasn't." Everyone leaves. Gregson wants a warrant for Barts.