Somebody is back from the grave. Somebody bad. Somebody the Investigator killed with good reason. Somebody who should have stayed dead. Somebody who didn't. Deadwave is a classic Call of Cthulhu scenario of zombie-fuelled revenge, written by one of the game's favourite authors.
from the credits:
This scenario was written by Mark Morrison and first published in the Chaosium Digest, Volume 9, Number 4 (December , 1994).