I read this news article recently and thought it was an amazing game hook for a modern or time-jumping adventure.

You could play the assassin(s) who committed the crime in the 16th century. You could sneak onto the estate battle guards and catch the lovers.

You could play the modern-day sleuth's who are attempting to unravel the mystery from the 16th century and run into a ghost that haunts the ruins to this day.

Or you could come up with any number of other hooks on your own. Check it out here:

http://news.yahoo.com/s/nm/20100211/...ly_mystery_odd