Castle Master II: The Crypt is the sequel to the ghost-hunting Freescape game, Castle Master, and it was released by Domark in 1990 as part of a double pack with the first Castle Master. As far as I know it was never published as a stand-alone title.
The Crypt is the same as Castle Master in many respects, except that the puzzles and environments are obviously different. The controls and aims are the same as before: destroy the spirits before they destroy you; find keys to open doors, and loot the treasures inside a haunted crypt to score points as you go.