Grave Concerns

In this seventh book in the PI Series, Connor Harrison is trying to settle his father's estate but keeps running into complications. Who is the mysterious man claiming to be his dead father who Connor has not seen in more than thirty years and why does he keep insisting that the money in the estate belongs to Connor, no matter what others might tell him. Is this man some ghost or is it someone just impersonating his father? The mysteries continue to pile up as Connor finds himself being stalked by the young lady, Jean. But how is she involved and what about the strange secret that she refuses to divulge?