(From the publisher):
From the Publisher
After Charles was jilted at the altar by Margaret, he discovers that she is mixed up in a vicious kidnapping plot masterminded by a sinister figure in a grey mask. Charles turns to Miss Silver to uncover the strange truth behind Margaret's complicity, and the identity of the terrifying and mysterious individual behind the grey mask.
Original title: Grey Mask
Genre: Fiction→ Crime and Mystery→ Detective Story and Detectives→ Private Detective