The BBC has released the first images and teaser trailer, for Into the Dalek, the second episode of the Doctor Who series 8, which will air on BBC One and BBC One HD.at 7:30pm on Saturday 30 August.

Into the Dalek
The Doctor holds the future of the Daleks in his handsBBC

This will be the first time that the Doctor's latest regeneration, played by Peter Capaldi, comes face-to-face with his greatest nemesis, the Daleks.

Into the Dalek
The Daleks are determined to exterminate the rebelsBBC

The Daleks are up to their tricks again and this time they have surrounded a lone rebel ship. In order to save the beings in the ship, the Doctor must face a decision with severe consequences that could change the Daleks forever.

Into the Dalek
The rebels on a lone ship are facing off against a whole fleet of DaleksBBC

Clara and the Doctor's relationship is still strained and as he is forced to examine his conscience in the battle ahead, will he find the answer to an important question - is he truly a good man?

Into the Dalek
Samuel Anderson (right), who plays Danny Pink, will be the new love interest for the Doctor's companion Clara (played by Jenna Coleman)BBC

Into the Dalek will see the debut of new character Danny Pink, played by Samuel Anderson. Pink is to be a recurring character and a love interest for the Doctor's companion Clara, played by Jenna Coleman.

Into the Dalek
Peter Capaldi looks very serious as the new DoctorBBC

The fourteenth Doctor sprang back into action last week, but after only one episode it is too early to tell if he will be able to endear himself to fans.

Into the Dalek
Clara considers how to save the rebels from the onslaught of DaleksBBC

However, three recurring characters Strax, Jenny and Madame Vastra (The Paternoster Gang) first appeared in the sixth series of the show and have returned to help the Doctor on numerous occasions, and are still proving a hit with fans.

Into the Dalek
One of the rebels defends her ship against the DaleksBBC

After their appearance in Saturday's episode, many fans took to Twitter to demand a spin-off series for the Victorian crime-fighting trio.

Into the Dalek
The Paternoster Gang - minor characters Madame Vastra, Strax and Jenny have earned their own fan base in the 'Whoniverse'BBC

In addition to the main Doctor Who TV series, Strax, Jenny and Madame Vastra have also featured in various exclusive online "minisodes" (mini episodes) available on YouTube and have their own spin-off novella, Devil in the Smoke.