The Incident At Galley House review – an enthralling deduction game that can’t escape the genre’s classic problem

The machine before me looks like Frankenstein’s homebrew version of Guess Who. Its main panel is composed of three rows of portraits. Some show men in 1930s suits, others women in flapper dresses, still more are simply blue people-shaped silhouettes. Below each portrait is a simple on/off switch. To the left of the portraits is…