Eleven's Eleven (audio story)

Eleven's Eleven was the third story in the audio anthology Between Two Worlds, produced by Big Finish Productions. It was written by Lisa McMullin and featured Jemma Redgrave as Kate Stewart, Ingrid Oliver as Petronella Osgood, James Joyce as Josh Carter, Tracy Wiles as Jacqui McGee and Mark Bonnar as the Eleven.

Publisher's summary
A series of jewel robberies in London and the Home Counties draws the attention of UNIT when it's discovered that some of the stolen gems are alien in origin. The robberies are the work of an organised criminal gang led by East End villain Ava Drake. But Ava has a new, ruthless partner. The Eleven has promised her riches, and for him the gems are a means to defeat UNIT and regain the arch.

Plot
Ava Drake blasts her way into a vault and has Tony and Carla help her rob the treasures inside whilst Kevin stands guard. The Eleven introduces himself, having killed Kevin, and offers to give her valuable security information in return for her gang's assistance in stealing a series of jewels.

Kate and Osgood meet with Josh on Middle Mouse, where the Arch is now being stored inside an old lighthouse. Osgood believes that she has found a way to disable it using a device adapted from the Sontarans' teleport technology. On the way back to the Tower of London, Scotland Yard informs UNIT of the robbery of jewels previously sold by the Auctioneers, leading Kate and Josh to reroute to the fully-automated West London Safe Deposit Centre in Knightsbridge where the Cheapside Hoard is kept.

Osgood, who has remained on the island to run her experiments on the Arch and appears to them thanks to Kate's hologram projector, grants them access. The Eleven and Ava blast their way in, knocking out Kate and Josh, and destroy the hologram projector to get rid of Osgood. They locate the hoard, from which the Eleven wants only one blue stone, and they leave with a number of other treasures. Upon awakening, Kate and Josh check the list of objects sold by the Auctioneers and find that only one more jewel is on there. Despite a news blackout, Jacqui reports on the robbery.

The Eleven inserts the gemstones he has stolen into a machine to detect the Arch but still needs one more: the Idol's Eye, which is located on a pendant owned by Lady Hester Engleby. He and Ava break into Engleby Hall and steal the jewel, but they are spotted leaving by Kate and Josh from their helicopter. Kate and the soldiers search the area, but the Eleven and Ava escape after almost hitting Kate with their car. She sends Josh to speak with Jacqui and calls Osgood to update her.

Josh meets with Jacqui in a coffee shop and learns of Ava's identity and that the jewels being stolen do not seem to be being sold on the black market. Later, she bribes a member of Ava's gang to plant a bug and UNIT overhear the Eleven and Ava's plan to steal a Celtic brooch from the Caledonian Gallery in Glasgow. With Osgood having found that the Arch reacts to a simulation of the jewels' radioactive signature, Kate deduces that the Eleven is building a tracker.

Kate has the gang followed but plans to have them arrested when they are away from the public. Meanwhile, Jacqui takes a boat to Middle Mouse and Osgood calls Kate when the Arch starts glowing, indicating that the Caledonian Gallery is a trap and that the Eleven has all that he needs. At the gallery, one of the soldiers becomes trapped in the brooch's paralysis field and Kate and Josh climb out through a glass ceiling to avoid it.

The Eleven arrives on Middle Mouse with the gang and locates the Arch, disabled by Osgood through complex matter realignment. Tony and Carla die when they try to touch it due to how energised it is in this state. Deeming the gang useless, the Eleven kills all of them bar Ava and takes Jacqui hostage to commandeer a helicopter when UNIT reinforcements arrive. Using a device he shot into her to make her obedient, the Eleven has Ava throw Jacqui into the sea before escaping.

Kate and Josh save Jacqui but lose the Eleven, although Kate considers the day to be a victory given that the Eleven failed to steal the Arch and UNIT have acquired his tracer device. To keep Jacqui from running an exposé on Good Morning UK, Kate tells Josh to give her access to the salacious files on David Attenborough. Kate calls the Curator to inquire about moving the Arch to the Under Gallery.

Cast

 * Kate Stewart - Jemma Redgrave
 * Osgood - Ingrid Oliver
 * Josh Carter - James Joyce
 * The Eleven - Mark Bonnar
 * Jacqui McGee - Tracy Wiles
 * Ava Drake - Maggie Service

Worldbuilding

 * Ava, Tony and Carla rob the vault. Kevin guards the tunnel entrance.
 * UNIT once thought that the Sea Devils had returned and set up an observation base on Middle Mouse, an island near Anglesey. East Mouse and West Mouse are nearby.
 * Human DNA is similar to that of a banana.
 * The Eleven got his gun from Mirabilis V, approximately seventy light-years past Jupiter.
 * Ava went to the National Museum on a school trip when she was young.
 * Ava steals the Celestine Rubies, as well as the Ferrier Haircomb which was on display at the National Museum.
 * Kate has a hologram projector.
 * The Cheapside Hoard is a collection of hundreds of jewels and gemstones buried beneath London for over three centuries. They were originally contained in a meteorite which landed on the south coast. One of the Auctioneers' criminal clients stored the collection in the West London Safe Deposit Centre.
 * Jacqui reports for Out There News.
 * Ava likens Lady Hester's home to the eponymous house in Downton Abbey.
 * The Caledonian Gallery is in Glasgow.
 * Kate says that she somebody should contact the Black Archives to find a way to get rid of a paralysis field.
 * The Four mentions Gallifreyan sky-skimmers.
 * Kate and Josh see the Isle of Man.
 * Jacqui threatens to run an exposé on Good Morning UK.

Continuity

 * Osgood has adapted technology from the Sontaran teleport technology. (TV: The Sontaran Stratagem / The Poison Sky)
 * The Eleven says that he has met one or two Doctors. (AUDIO: The Eighth Piece, Relative Time, The Dreams of Avarice, etc.)
 * The stolen artefacts used to be some of the alien technology sold by the Auctioneers. (AUDIO: The Sontaran Project, etc.)