Sweeney Todd: The Demon Barber of Fleet Street is a 1979 musical thriller with music and lyrics by Stephen Sondheim and book by Hugh Wheeler. The musical is based on the 1973 play Sweeney Todd, the Demon Barber of Fleet Street by Christopher Bond. Set in 19th century England, the musical tells the story of Benjamin Barker, alias Sweeney Todd, an unjustly exiled barber, returns to 19th century London seeking vengeance against the corrupt judge who framed him and ravaged his young wife. The road to revenge leads Todd to Mrs. Lovett, a resourceful proprietress of a failing pie shop, above which he opens a new barber practice. Mrs. Lovett's luck sharply shifts when Todd's thirst for blood inspires the integration of an ingredient into her meat pies that has the people of London lining up, and the carnage has only just begun.