I'm Not Harry Jenson(2009)

Overview:

Evoking the style and pace of the Noir genre, the film is essentially a murder mystery with Stanley (Gareth Reeves) the prime suspect. Stanley's success as a novelist has been largely due to his style where he writes from the first person perspective of the central characters, who are always the killers in real-life cases. Troubled with writer's block, his agent suggests a tramping trip "to clear his mind". However, when he wakes up on the first morning of his tramp, he finds his fellow tramper dead.