All irregularities will be handled by the forces controlling each dimension. Transuranic, heavy elements may not be used where there is life. Medium atomic weights are available: Gold, Lead, Copper, Jet, Diamond, Radium, Sapphire, Silver and Steel.
Sapphire and Steel have been assigned.

3.1 Second Sight by Nigel Fairs
Sapphire and Steel have gone. Sapphire and Steel are here.

3.2 Remember Me by John Dorney
A faded sitcom star wanders through the darkness of a deserted pier, haunted by the ghosts of his dead colleagues.

3.3 Zero by Steve Lyons
The Space Shuttle Aspirant is in a decaying orbit, its engines dead. Time is running out.

3.4 Wall of Darkness by Nigel Fairs
An abandoned shopping centre in the middle of the night. Is the journey at an end?

Please note: these stories were originally published in 2008, and were previously available to purchase individually on CD from Big Finish.