The Broken Ones by Stephen M. Irwin

In "The Broken Ones" by Stephen M. Irwin, on a day forever known as s "Gray Wednesday", every human being on Earth found themselves haunted by a ghost only they can see. Three years later society has nearly crumbled, plagued by alarming suicide rates, spiritual confusion, and economic collapse.

In this landscape Detective Oscar Mariani is assigned to investigate murders that are said to be the result of people driven mad by their ghosts, and he stumbles upon a ritualistic murder that no one seems to want him to solve. The case will threaten not only his career, but his life and the lives of those he loves. 

What did I think of the book? Eh. I'm ambivalent. Great premise, but the ghosts didn't have all that much of a role in the book beyond ruining society, and I'm still not clear on how they did that. The writing was solid but didn't 'zing', but, BUT I think the mystery itself was really developed well, and I liked all the emotional baggage Mariani carried around. 

My grade: B Book#77 of the year.