Greek underworld his duty was to bring these souls to the underworld and no one would persuade him to do otherwise. Cerberus (Kerberos), or the "Hell-Hound", is Hades' massive multi-headed (usually three-headed) dog with some descriptions stating that it also has a snake-headed tail and snake heads on its back and as its mane. Born from Echidna and Typhon, Cerberus guards the gate that serves as the entrance of the underworld. Cerberus' duty is to prevent dead people from leaving the underworld. Heracles once borrowed Cerberus as the final part of the Labours of Heracles. Orpheus once soothed it to sleep with
The Dog It Was That Died jumping off Waterloo Bridge into the Thames. However, the attempt goes wrong when he falls not into the water but onto a passing barge, breaking his legs and killing a dog which was on the deck. Over the course of the play, the reasons for this emerge. Some years ago, Purvis was approached by a Soviet spy named Rashnikov, who asked him to work as a double agent. Purvis reported this to his British superiors, who told him to pretend to work as a Soviet double agent whilst really working for them. However, Purvis also recalls that Rashnikov had told