6x235 - Dark Shadows

Sabrina remembers how she planned a surprise party for Chris two years earlier when he made the transformation in front of her (however she does not tell anyone). After examining Sabrina, Julia is convinced she knows what Chris is and could tell someone, but is keeping quiet. Barnabas and Julia go to the mausoleum to release Chris, however he is still a werewolf despite the absences of a full moon.