Dark Shadows : Barnabas, Auentin and the Magic Potion (1971)






English


Carolyn becomes marked for murder when the owner of an antique shop where she works discovers what he believes is a serum providing eternal youth. After his daughter tries the serum and dies, her ghost haunts Carolyn. Barnabas insists that Carolyn stay on the job long enough to gather evidence that her boss is a murderer.