Created by: Sydney Newman
Written by: Matt Smith, Arthur Darvill, Alex Kingston
Release date: 25 December 2010 (Christmas Episode)
Premiere date: 23 April 2011
Episodes: Appeared in all episodes
Genre: Adventure, Drama, Family
Running time: 45min
The story arc of this series involves River Song's true identity, revelations of the mysterious Silence referenced in series 5 and apparent death of the Eleventh Doctor. Series 6 began with the Eleventh Doctor inviting Amy Pond, Rory Williams and River Song to a picnic in Utah using blue envelopes, where a figure clad in an Apollo spacesuit shoots the Doctor and kills him before he can regenerate. After burning the Doctor's body, the companions find the Doctor alive and well in a café; the Doctor that was shot and killed was a future version, and he apparently invited his companions and past self to instigate a plan in 1969 America. The rest of the series makes references to the future Doctor's plan and his apparently final death. The Silence was also revealed in this series; they are a religious order dedicated to eliminating the Doctor before he can answer "the Question". Finally, River Song's true identity was revealed, a mystery that has been present ever since her introduction in Silence in the Library in 2008. Whilst there have subtle clues and plot points concerning a mysterious little girl, Amy's seemingly failed pregnancy and a lady with an eye patch throughout the first half of the series, the mystery was finally revealed in A Good Man Goes to War; River Song is Amy and Rory's daughter, raised and indoctrinated by the Silence for the sole purpose of assassinating the Doctor. Because she was conceived within the TARDIS during flight she absorbed the energy of the Time Vortex, making her human, but with a Time Lord's capability of regenerating. Her Time Lord-like physiology and abilities also made her the perfect assassin for the Doctor. The series concluded with the final outcome of the Doctor's plan throughout the series; the spacesuit-clad figure who killed the Doctor was River Song, with the Silence-modified spacesuit forcing her to commit the deed. However, the Doctor had faked his own death and made it a fixed point in time in order to trick the Silence, getting them off his back at least for a while. Whilst most of the universe is convinced that the Doctor is dead once and for all, a handful of individuals including his companions know otherwise. However, there were still unresolved matters following the conclusion of the series; the Silence, whilst their numbers have fallen, are still present and they may still learn later that the Doctor was not killed. This series has also addressed a mystery that has been part of Doctor Who since its creation and one that head writer Steven Moffat has mentioned in at least two episodes (The Girl in the Fireplace and Forest of the Dead). The oldest question in the Universe is revealed to be "Doctor who?"