Doctor who is strangely concerned about Professor Horner's plan to cut open an ancient barrow near the peaceful English village Of Devil's end; equally worried is miss hawthorne, the local white witch, who foretells a te...Doctor who is strangely concerned about Professor Horner's plan to cut open an ancient barrow near the peaceful English village Of Devil's end; equally worried is miss hawthorne, the local white witch, who foretells a terrible disaster if he goes ahead; determined that the Professor should is mr. Magister, the new vicar (in truth the master) whose secret ceremonies are designed to conjure up from out of the barrow a horribly powerful being from a far-off planet.