The Dangerous Ladies Affair

For these Victorian-era PIs, stopping extortionists is not only grand, but excitingly lucrative—from the authors of The Plague of Thieves Affair.

When a pleasant afternoon's bicycling through Golden Gate Park with a friend ends with the revelation of threatening letters, followed by a gunshot in a mansion garden, Sabina Carpenter knows this is a case that demands her immediate and undivided attention.

The questions her partner John Quincannon has to unravel are not difficult: Wrixton, a we...