Seven TERRIFYING CHARACTERS....
Deadly and unexpected foes: a vampire who walks in the sun and laughs at clerics, a mummy whose touch turn living flesh water, and a fearsome host of others: a darkling, a vassalich, a ghost, fiends, golems, a graveyard elemental, and a mad scientist.

Seven NIGHTMARISH ADVENTURES....
Doctor Rudolph van Richten, author of the learned Van Richten's Guides, summons player characters from levels 3 to 9 to wipe out the evils that haunt Ravenloft.

Thrill your players with these seven Chilling Tales

You need the RAVENLOFT boxed set to play these adventures.
The various Van Richten's Guides are helpful additions but not necessary for play.