CHAPTER 4 NEW SCOTLAND YARD, AND EALING, OXFORD STREET AND CLAPHAM TOWN, LONDON Aalia Phadkar smiled at her redoubtable detective inspectors. “You know when it comes to science, one has to be so careful. We are police officers and can’t be expected to have a comprehensive knowledge of anything. Hydrogen cyanide production, for instance, I freely admit, firmly falls into the category of a closed book for yours truly. I called you up here to explain how I’ve avoided a banana skin.” Her exceedingly attractive countenance lit up with an even-toothed smile that transformed it into beautiful. “To think, I was on the verge of obtaining passes for you to enter Porton Down, which, as you know is a maximum security, top-secret establishment, but fortunately, I had a light-bulb moment and phoned t