The Tale of Sweeney Todd character of Sweeney Todd, the Demon Barber of Fleet Street, originated in an 1846–47 penny dreadful entitled "The String of Pearls". In 1847, George Dibdin Pitt adapted the story for a stage melodrama. A directed by George King was the first screen version. Christopher Bond's 1973 stage adaptation was musicalized by Stephen Sondheim in 1979. Schlesinger's film is a dramatic departure from the previous narratives. It dispenses with all the characters except Todd and Lovett, adds the plotline involving the missing diamonds, and offers a completely different reason for Todd's murder spree. The Victorian era locales were filmed in Dublin,
Sweeney Todd: The Demon Barber of Fleet Street New York, this tale of horrors was transformed into a mountain of steel in motion. Prince's scenic metaphor for "Sweeney Todd" was a 19th-century iron foundry moved from Rhode Island and reassembled on the stage, which critic Jack Kroll aptly described as "part cathedral, part factory, part prison, that dwarfed and degraded the swarming denizens of the lower orders." The massive scope of Prince's setting went beyond even Sondheim's intentions. Sondheim admits that his conception of the show differed from that of Prince: "Hal's metaphor is that the factory turns out Sweeney Todds. It turns out soulless, defeated, hopeless people.