Michelle Pfeiffer and Helena Bonham Carter are in negotiations to join the cast of the TV soap opera adaptation "Dark Shadows".
Pfeiffer would play Elizabeth Collins Stoddard, the reclusive matriarch of the Collins clan. She is the owner of Collinwood, the mansion where the supernatural saga unfolds.
Bonham Carter would play Hoffman, a specialist in psychology and rare blood disorders who moves into Collinwood. While she initially is a threat to the vampire Barnabas, she eventually becomes his ally, who might be able to cure him of his thirst for blood.