Night Film by Marisha Pessl

Ashley Cordova is dead. Scott McGrath, a veteran investigative journalist wants to know why. The reason why the death of this beautiful, young woman has piqued his interest so much is because of who her father is. He is Stanislas Cordova, the world famous director of strange cult/horror films that hasn't been seen publicly in over thirty years. The last time McGrath got involved with Cordova he lost his marriage, child, and career. This time he might lose everything else. With the aid of two strangers, McGrath takes a strange and psychedelic journey where not everything in front is real and what is real is more horrifying than anything that Cordova has put on screen.