Third book in a Victorian mystery/detective series.
A motley trio (a female photographer, a homosexual lord, and a schoolboy) working for a newspaper bet the Yard that they can solve the mystery of the hangman's murder faster than the police force.
The story was quite enjoyable, I just didn't like all the hinting at what brought the three together and their previous cases without actually telling me anything about it.
Between a Pick and So-So.