Jason Wilson is a young science teacher at Castleford Comprehensive School. He is happily married to Maria, who is a part-time artist and librarian. He has an unusual hobby. He likes to visit cemeteries to photograph epitaphs carved on tombstones. He also regularly reads the obituary column in the local newspaper. One day, he receives a threatening email, which is quickly followed by menacing phone calls, a mysterious painting and strange hieroglyphic-like symbols which he has to decipher before his time runs out and something bad happens to him.