Episode Six: In the Night Garden and Fireman Sam...Visions of Hell?

In the Night Garden and Fireman Sam are supposedly squeaky clean, colourful fun for the pre-school age bracket, but what dark secrets are lurking beneath those cheerful facades? Are the residents of the Night Garden being punished for their earthly sins? Is Derek Jacobi being held at gunpoint? Is the arsonist of Pontypandy just a lonely boy looking for some attention from his deadbeat dad, or are there demonic forces at work?