The Hidden Door by Arthur Gask is about four people who have mysteriously disappeared from villages along the coast of Suffolk. Scotland Yard has left it up to detective Gilbert Larose to uncover what has happened to the victims. Excerpt: "GRIM and grey was Thralldom Castle. Eight hundred years and more its mighty walls had reared their heights to Heaven, scorched by the suns, buffeted by the tempests and fretted by the lashing rains."
