When an insurance man calls upon Messrs. “Holmes” (Basil Rathbone) and “Watson” (Nigel Bruce) in their recently bullet-holed Baker Street lodgings, he raises some concerns about a group called the “good comrades”. They live in a remote, coastal and creepy, mansion house where each have made the others their beneficiaries in the event of their demise. Quite recently, two of them have bitten the dust and when “Holmes” hears that a certain “Dr. Merrivale” (Paul Cavanagh) is amongst them, they decide that they ought to pay these gents a visit. The whole shooting match is hosted by the dithery “Alis...