The Iron Dagger. Wainwright Mysteries, #1

Wainwright Mysteries Book One Cary Wainwright is just the typical private investigator, solving cases that are laid across his desk when a woman walks in, asking him to clear her brother's name of patricide. The secrets this family has are numerous, and Cary is thrusted into a whole new world he didn't even know existed. As the riddles get more and more twisted, the PI's life becomes more and more endangered.
When the twists and turns reach their climax, things are going to become a whole lot more interesting. When Maebh O'Connell walked into Cary Wainwright's private investigation office, Cary thought it was just going to be an open and shut case of clearing a young man of patricide. But the deeper he delves into the O'Connell family secrets, he is thrusted into a world he never knew existed. As the twists and turns of this riddle of a case become more convoluted, the PI's life becomes more endangered.
Someone does not want him to solve the case. As the puzzle reaches its climax, the only direction he can go is into the path of danger.