McCammon's Swan Song is really good, I highly recommend it.
Stephen Woodworth wrote a series starting with Through Violet Eyes. If you were a person with violet eyes, the dead could use you as a conduit and speak/act through you. There's 4 books in the series, the main character is a woman who is trying to live a normal life without much success. The books are Through Violet Eyes, From Black Rooms, In Golden Blood and With Red Hands.