The Marriage Casket (Ulverscroft)

Jeff figured he was about to make a killing when Nathan Rose offered him all the antiques in his newly deceased aunt's house dirt cheap. What Jeff hadn't bargained for was the bloodstain beneath one of the priceless rugs, indicating that the death of Verena Rose was no accident. But unlike the police, Jeff doesn't think that nephew Nathan is the culprit. Convinced the answer lies somewhere in the old woman's cluttered house, Jeff starts rummaging and unearths an antique marriage casket crammed with old letters. Reading through these, he discovers the old woman had more than her share of secrets. Now, Jeff must determine who hated or feared her enough to commit murder...before he winds up in a casket himself.