Silkworm by Robert Galbraith

Rowling (really no reason to pretend Galbraith is anyone else) turns to the world of literary intrigue for her second Cormoran Strike mystery.  Novelist Owen Quine has just finished a manuscript full of easily identifiable characters doing nasty and, until his writing, secret things.  When the missing Quine turns up dead, it is easy to see why any of a number of the people whom he has included in the book may have wanted to kill him.