Suzanne Munshower: Whether it's Ian McEwan's dubious villains or Tom Rob Smith's 'dizzying mass of incident', credibility in a book isn't about being true-to-life, it's about characters being true to themselves
The character of Thomas Carnacki, ghost-finder, celebrates his centenary this year. Through him, his creator William Hope Hodgson shows us that detective fiction and the occult can be a perfect match