From Goodreads: ""It seemed an easy enough scene for Bob Meakin to play. The handsome but aging star was to jam the eyeglasses on his nose as he rushed down the subway stairs, then look around wildly for his girl. The producer of Northburn Films thought they might be able to shoot it in one take. But with the crew in position and the camera rolling, Meakin tripped on the stairs, and fell directly beneath the wheels of the incoming train. At first this appeared to be no more than an appalling accident, but subsequent events convince Inspector Henry Tibbit that murder was added to the script."
Patricia Pakenham-Walsh, also known as Patricia Moyes (19 January 1923 – 2 August 2000) was a British mystery writer. Her mystery novels feature C.I.D. Inspector Henry Tibbett. One of them, Who Saw Her Die (Many Deadly Returns in the USA) was nominated for an Edgar Allan Poe Award in 1971. Moyes was inducted into the Detection Club in 1971. In addition to the Tibbett mysteries, she also wrote several juveniles and short stories.