Scarlet

The roads in and out of Paris are heavily guarded, but the dead have easy passage out of the city. A ragged old woman transports the coffins of the most recent victims of the guillotine and is waved on unimpeded. Later, the same crone watches five French aristocrats step out of their coffins unscathed. Not beheaded, but spirited away to safety by that most elusive of spies: the Pimpernel. Or, as she’s known in polite society, Lady Scarlet Cavendish.

When not assuming her secret identity as a...