The Valkyrie plotters, a group of conspirators led by Colonel Claus Schenk Graf von Stauffenberg, were all either executed or imprisoned for their part in the failed July 20th Plot to assassinate Adolf Hitler. Most of them were tried in the People's Court before Judge Roland Freisler and sentenced to death by hanging or beheading. Those who escaped execution were sent to concentration camps where they died due to harsh conditions. In addition, several members of the conspiracy were arrested and interrogated by the Gestapo with some even being tortured in an effort to discover other potential co-conspirators who may have been involved in the attempted assassination.