How many ghosts did Marley ghost say would haunt Scrooge?

There were four spirits that visited Scrooge that night: the ghost of his dead partner Marley; the Ghost of Christmas Past, who "took" Scrooge back in time to Christmases--both good and bad--when Scrooge was younger; the Ghost of Christmas Present, who "took" him to his nephew Fred's home and the Crachit's home, to show him how joyously they were enjoying the season, in spite of being poor; and the Ghost of Christmas Yet to Come, who "took" him into the future to scenes relating to Scrooge's own death.