I reached into my pocket and produced a matt black disc. 'Footage of the injection,' I said, holding it up. 'Composite footage of Sheryl Bostock leaving PsychaSec and flying to a meeting with your limousine, which subsequently heads out to sea. Without this, there's nothing to say your husband didn't kill Maria Rentang chemically unassisted, but they're probably going to assume Kawahara dosed him aboard Head in the Clouds. There's no evidence, but it's expedient.'