The characters you refer to as predatory and unsavory are useful. They're the ones who make a novel into a thriller. They're active, and most of the common virtues, the signs of a good person, are not.
Thomas PerryI do have to earn a living, so I'm conscious of probable reactions from readers, but the most important one is still the awareness that if I'm not enjoying a story, the reader won't either.
Thomas Perry