Having briefly stepped into a secret room where he saw several familiar faces with familiar names acting in a strangely different manner, Barnabas (Jonathan Frid) reveals his experiences to Julia (Grayson Hall). Prof. Stokes (Thayer David) explains his theory that a parallel world in a parallel time exists (thereby establishing the premise of the series' latest story arc). Meanwhile in the "real" world, Megan (Marie Wallace) continues her vampiric activities, and Elizabeth (Joan Bennett) is stopped from removing a portrait of Angelique. This episode first aired on March 13, 1970.