Secret Heart

The Secret Heart was one of the last of the Racnoss' spacecrafts. It was similar in design to the Empress of the Racnoss' ship, the Webstar and was also powered by Huon energy.

Roughly 4.6 billion years ago, the Secret Heart attempted to escape the Fledging Empires by sealing itself inside the Earth as it was formed. In 2007, there was finally Huon energy to awaken the Secret Heart, but the escaping Racnoss were drowned in the water of the River Thames by the Doctor. (DW: The Runaway Bride)