John and Chas learn of a series of murders involving families with young children, in which both parents are violently murdered while the child escapes unharmed. Meanwhile, a young boy begins to act strangely after seeing an apparition in his bedroom. John realizes that he is chasing the spirit of a child who killed his abusive parents and has since possessed multiple children before psychically killing their parents. John tracks the spirit to its current host but struggles to convince the boy's parents that he can help their son. Manny appears to discuss John's own childhood abuse, and suggests that John can only help the possessed boy and the spirit if he truly understands what they are suffering. With help from the boy's mother, John finally succeeds in exorcising the spirit and forcing it back into its original body, Marcello Panetti, where it was with a comatose patient in a mental hospital.
The best known literary Caliban appears in Shakespeare's "The Tempest" and is the misshapen son of a witch, with magical powers of his own. The codename has, however, been used in comics on several occasions.
A trick-or-treater can be seen dressed as Robin, another famous DC character, famously known for being the sidekick of Batman.
Chas is shown playing with the "Sword of Night." This is used by the DC comic hero known as Nightmaster who made his comic debut in Showcase #82 (May 1969). The sword is able to make people tell the truth, deflect magical energies, and warn the user of danger.
Though the stairs of Vulcan shown in the skyline of Birmingham look like plaster, the tall statue of Vulcan is bronze.