It´s a crossover between The Beginning and The Heretic. Regan is now 16, she goes to spend her holiday in Africa with her father – Harold, who is an archeologist. Meanwhile, Father Dyer is trying to find out the truth behind his friend´s death and the demon that possessed Regan, so, he goes to Africa to try to track down Regan.
In the midst of the desert, Harold, helped by the Native villagers finds an ancient tomb and Regan decides to go down to take a look. Down there, she starts to have flashbacks of her possession and faints. Dyer arrives at the village, and, the story goes on, I just thought of the beginning.