Does anyone care about motive anymore?
I’m trying to put together a plot outline for a mystery, and I’ve run into a bit of a problem. I have the main cast of characters, including the killer, and the basic plot, but when it comes time to give the killer a motive, I grind to a screeching halt. Not because I can’t come up with one, but because I start to wonder which of my possible options would be considered more believable.
The characters and set-up are sufficiently angsty and dark that the mystery itself can’t fall on the cozy side of things and still work, which means – I believe – that my killer has to set out to kill his victim with malice aforethought, rather than fall into the situation accidentally. On the other hand, I’m not looking to make my killer an evil beast who gets his jollies from the pain of others.
The way I see it, I have two basic choices. I can go with the "he killed so-and-so for the sake of money/lust/etc. and then knocked off a few more people to cover it up" theory. Or I can go with the "sociopathic personality who finally snaps and becomes a serial killer" theory. Neither one is particularly realistic – although I’ve seen examples of both in real life – but what I’d really like to know is, does one seem much more believable than the other? If you’re reading a book about a serial killer, how much background do you need in order to accept that some dude is running around offing people? Do you need a really good reason, a logical reason, for the murders, or is it enough for you to know that the reason seems logical to the killer? For that matter, as long as the killer poses enough of a threat to the protagonist to keep the reader on the edge, is why he’s doing what he’s doing much of a consideration at all? Some of the fiction I’ve read lately – from some big names, I might add – would indicate that the answer is no. What would you say?
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