Sweeney Todd dogs alerting neighbors and the gendarmes. The two confess, and are summarily burned alive; the houses where the crimes took place are then razed. Whether this version of the story is based on "The String of Pearls" or its dramatisation, or a much older tale alluded to by Féval is unclear. In any case, it may well be the source for some recent versions that move the tale from London to Paris. In 1875, Frederick Hazleton's c. 1865 dramatic adaptation "Sweeney Todd, the Barber of Fleet Street: or the String of Pearls" (see below) was published as Vol 102 of
Sweeney Todd: The Demon Barber of Fleet Street of the story. In the play, Sweeney Todd’s mental collapse and the subsequent plan for Lovett's meat pies take place in less than half a page of dialogue, much too quickly to convey the full psychological impact, in the view of scholar Larry A. Brown. Sondheim's version more carefully reveals the developing ideas in Sweeney Todd and Mrs. Lovett's demented minds. Sondheim has often said that his "Sweeney Todd" was about obsession – and close friends seemed to instinctually agree. When Sondheim first played songs from an early version of the show for Judy Prince (wife of the show's director),