Spying on Barnabas (Jonathan Frid) in the secret room of the mausoleum, Carl (John Karlen) realizes that Barnabas is one of the vampires whom Pansy's ghost warned him about. Magda (Grayson Hall) offers to lift Quentin's curse during the next full moon. Quentin (David Selby) locks Carl in the mausoleum to prevent him from telling what he knows. This episode originally aired on June 19, 1969. ~ Hal Erickson, Rovi