When “Holmes” (Basil Rathbone) and “Watson” (Nigel Bruce) visit Canada to attend a seminar hosted by “Lord Penrose” (series regular Paul Cavanagh) his scientific approach to crime solving contrasts with the more intangible one taken by their host, but that’s the least of their troubles when they are forced to travel to the misty village of “La Mort Rouge” to investigate the brutal slaying of “Ladyver mais...