The Cuckoo's Calling (Cormoran Strike Novel), Robert Galbraith

When a troubled supermodel falls to her death from the balcony of her London home, it is assumed that she has committed suicide. However, her brother has his doubts and calls in private detective Cormoran Strike to investigate.
Strike is a war veteran - wounded both physically and psychologically - and his private life is in disarray. The case gives him a financial lifeline, but it comes at a personal cost: the more he delves into the young model's world, the darker things get and the closer he comes to terrible danger.
Published to huge acclaim from readers, reviewers, and writers, The Cuckoo's Calling was later revealed to have been written by J.K. Rowling, under the Robert Galbraith pseudonym. This compulsively readable crime novel is the first in a series featuring the private detective Cormoran Strike.