The fourth season of the Danish reality television series Big Brother was produced by Endemol and premiered on January 30, 2012, on Kanal 5.

The season was hosted by Marie Egede and lasted 100 days with the winner receiving a prize of 500,000 Danish krones (DKK).

A typical Week began with the shopping task, followed by the nominations, and ended with the eviction of a Housemate during the live Sunday episode.

Surprising Yes Week - Patricia and Thomas were asked to wear an electric shock suit.

Blue Team: Melander, Henrik, Patricia, Alexander, Amanda, Thomas and Guido.

Red Team: Lasse, Cathrine, Christian, Clifford, Michella, Umar and Mads.

Red Team: Lasse, Cathrine, Christian, Clifford, Michella, Umar and Mads.

Sweden The TV viewers did not save Mads and therefore he had to leave the house on day 49.

Vikings They returned together with Annica Englund - who they 'abducted' from the Swedish Big Brother house.

Dictator week Annica Englund returned to the Swedish Big Brother house on day 62.

Russian Roulette The TV viewers did not save Patricia and therefore she had to leave the house on day 70.