Naming of moons underworld, and Nix (a respelling of Nyx), mother of Charon, is the goddess of darkness and the night. Kerberos is a giant three-headed dog who guards the entrance to the underworld. The fifth moon is named for the river Styx that forms the boundary between the worlds of the living and the dead. The name of Eris's moon Dysnomia was suggested by its discoverer Michael E. Brown, who also suggested the name of the dwarf planet. The name has two meanings: in mythology Dysnomia (lawlessness) is the daughter of Eris (chaos). However, the name is also an intentional reference to
The Case of the Howling Dog the dog for a lookalike. He gives Bessie the dog and orders her not to tell anyone what really happened. Perry later tells Della that he is sure that whatever Bessie did was in self-defense. On October 23, 2012, Warner Home Video released the film on DVD in Region 1 via their Warner Archive Collection alongside "The Case of the Curious Bride", "The Case of the Lucky Legs", "The Case of the Velvet Claws", "The Case of the Black Cat" and "The Case of the Stuttering Bishop" in a set entitled "Perry Mason: The Original Warner Bros. Movies Collection". This