Fred M. White - Mystery of the Ravenspurs

The Ravenspurs have for generations resided quietly in prosperity and comfort at their seaside castle. But the clan is suddenly besieged with strange happenings which are dwindling the population of the family to only a few which remain, and those few find themselves in fear of becoming the very last of the powerful family if the cause of their untimely deaths and disappearances is not uncovered soon. It will take a great deal of detective work and a touch of travel to help unravel the mystery of the Ravenspurs. (Roger Melin)