The title makes it sound like a Thriller, doesn't it? And it is. But first what you get, and what you mostly get, is the biography of a fictional highly=successful novelist, although the biography is rather a bit interrupted by the biographer working through his own shit. This novelist guy, this supposed protag of this bio, killed his highly=successful doctor brother with a knife. Bloody mess. And too the writer is now dead. But what you read is this biographer interview our writer in his jail cell, etc. And then at the end you get this unfinished manuscript of this writer more or less working through his murdering his brother via a final novel. I wouldn't bother reading that novel. Unless it were stitched onto the bio which precedes it, which it is.* And the result is another lovely genre=rich metafictional romp by this very happy discovery, Evelin Sullivan. I recommend you just read all of her books.
* yes, just a tad reminder of Stew.