To be clear: Beatrice, Duchess of Kesgrave, does not think every dead person in London is the victim of a sinister plot. The city is large, after all, and some of its inhabitants had to have died from innocent causes. Like Peter Huzza, who was killed in a horrifying steam engine accident. It is shocking, yes, the way his body was torn apart by the explosion of his very own machine, but not entirely surprising. High-pressure steam is notoriously...