Twelfth Doctor Adventures Season Finale Trailer

Doctor: "This city - what is it called?"

Unknown person: "Christmas!"

Cyberman: Tonight the Doctor will fall!

Cybermen are seen shooting at Helen. They miss and all around her are small exploisens.

The Crack in the wall can be seen.

Doctor: "Helen!"

Helen is seen hanging from a tree.

Unknown persons: "They want you, Doctor!"

Doctor: "Why, why me?"

Unknown person: "Ask them!"

The Doctor and the unknown person are surrounded by Cybermen.

Cyberman: "The Cybermen will rise ones more."

Other Cyberman: "Doctor, you will be upgraded to the Cyber-Leader."

A Cyberman attacks the unknown person.

Unknown person: "Doctor, today is the day you will fall!"

Helen falls out of the tree.

A Cyberman shoots at the crack (Time-Field).

Cybermites crawl into the Doctor's clothes. He screams.

Helen: "Doctor!"

Doctor: "Helen... Help... Me.... I.... am.... DELETE!"