A Newbury & Hobbes Investigation

When Sir Maurice Newbury, gentleman investigator for the Crown, and his close friend and assistant Miss Veronica Hobbes accompany Sir Charles Bainbridge, Chief Inspector of Scotland Yard, to a society party at the home of the enigmatic Greyson Fairfax, none of them have any idea of the danger they are walking into.

Disquiet grows as the host, Fairfax, fails to appear for his own party, and when one of the guests is found murdered in the grounds, that disquiet turns to panic. Thick fog hems them in, and some sort of mechanical monster prowls the night. The house is sealed, with the so-efficient servants insistent that no one should leave. Can Newbury and Hobbes get to the bottom of what's going on before it's too late for all of them?