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 a 'policeman' but actually another spy, Hogbin is assigned to investigate the circumstances of Purvis's suicide attempt, and in particular a letter he posted to Blair before his first attempt. Hogbin is the polar opposite of Blair – doggedly determined, prone to panic and seeing conspiracies at every turn. Pamela Blair, wife of Giles. She runs a donkey sanctuary, occasionally appropriating her husband's study as an operating theatre for her injured charges. She is having an affair with Blair's boss; a fact about which both she and Blair are entirely open and unconcerned. "The Dog It Was That Died" has