Every year at an exclusive private boarding school in New York state, the graduating students uphold an old tradition - they must swear an oath of secrecy and leave behind a "treasure" for each incoming senior.

When Duncan Meade inherits the room and secrets of Tim Macbeth, he uncovers evidence of a clandestine romance, and unravels the truth behind one of the biggest mysteries in the school's history.

How far would you go to keep a secret?