Folding razors were first produced in 1680. For the next 200 years, they were the primary tool for men to shave. And according to legend, they could be used for more nefarious purposes when put into the wrong hands! Sweeney Todd, you may recall, is said to be the murderous barber who cut the throats of unsuspecting customers and gave their bodies to his neighbor to serve up as pie fillings. But is there any truth behind the myth? Was there really a man called Sweeney Todd with a Barber Shop on London's Fleet Street and did anyone actually commit such horrific crimes? You can ponder those questions and decide if this tool was used for personal hygiene...or very personal vengeance.