The novella “Made of Steel” by Terrance Dicks was published for the first time in 2007.

The Tenth Doctor brought Martha Jones to the Cretaceous to watch dinosaurs but a T.rex approached a bit too much for their tastes and especially for their safety so they got back in the present. When the Doctor brings Martha back to the Royal Hope Hospital to greet her old colleagues, two Cybermen try to capture them.

The Doctor looks for information about abnormal events to understand something more about the Cybermen activities and discovers that they’re stealing very sophisticated devices. During his investigation, he gets found and arrested by military intelligence to force him to defeat the threat.