Heart of Steel: Part 1
- Episode aired May 24, 2013
Whilst the Eighth Doctor searches the universe for his lost incarnations, the Sixth Doctor faces upgrading at the hands of the Cybermen, but help may be closer than he thinks.Whilst the Eighth Doctor searches the universe for his lost incarnations, the Sixth Doctor faces upgrading at the hands of the Cybermen, but help may be closer than he thinks.Whilst the Eighth Doctor searches the universe for his lost incarnations, the Sixth Doctor faces upgrading at the hands of the Cybermen, but help may be closer than he thinks.