Using an 18th century form of voodoo, Angelique (Lara Parker) causes Sarah (Sharon Smyth) to become gravely ill. Barnabas (Jonathan Frid) is told that the only way to save Sarah is to marry Angelique. A "special" herbal tea figures prominently in this episode, which originally aired on December 21, 1967. ~ Hal Erickson, Rovi