Paranormal Detective

It's months that nobody has any news of detective Dilan and his assistant: they have mysteriously disappeared during their investigations on a strange case. The other night from his office window one could see a light on, and strange shadows moving inside it, somebody was looking for his WILL, somebody who should no longer be in this world... Will you find it befor it falls into the wrong hands? Will you have enough brains to solve the numerous enigmas which are between you and the cherished document?