WARNING: THIS ARTICLE CONTAINS SPOILERS
Sources say 'Doctor Who' bosses are bringing back the Ice Warriors after almost 45 years since they were first on our screens.
The Time Lord will do battle against these Reptilian Humanoid Martians that he first met back in 1967 (when Patrick Troughton held the role of the Doctor) they are expected to be among the first creatures encountered by the Doctor's new companion, who is played by Jenna-Louise Coleman.
The Daily Star newspaper reported on the episode, which will be written by Mark Gatiss: "'Who' fans have been crying out for the return of the Ice Warriors. Now they've got their wish. It's going to be an exciting year with the 50th anniversary celebrations."
Jenna's character - who is set to hit screens at Christmas - has been shrouded in mystery but it was recently claimed her name will be Clara.
Fans who have watched filming in Wales claim they overheard the Doctor (Matt Smith) calling her Clara.
Clara was in fact the middle name of former Doctor Who companion Elisabeth Sladen, who passed away in April 2011, hardcore Whovians suspect that DW bosses could want to honor her with the name of the new character, who takes over from Karen Gillen's Amy Pond at the end of this year.
However, as always show bosses are remaining tight lipped in regards to what villains will be returning