Abba

Jonathan is a young man with a strange condition that only his brother understands. But when he begins to yearn for a different life, their unique bond becomes increasingly tested.

Amy Pond and Rory Williams are trapped on a crashing space liner, and the only way the Eleventh Doctor can rescue them is to save the soul of a lonely old miser. But is Kazran Sardick, the richest man in Sardicktown, beyond redemption? And what is lurking in the fogs of Christmas Eve?

A service which creates holographic projections of late family members allows an elderly woman to spend time with a younger version of her deceased husband.

An alien similar to Ra appears out of the Stargate, killing five soldiers and kidnapping another, a year after the original Stargate mission. A new team is assembled, including some old members, and they go in search of the missing soldier in order to find out how Ra could still be alive. Meanwhile, the alien Goa'uld kidnap Sha're and Skaara, implanting them with symbiotes and making them Goa'uld hosts.

In this epic two-part finale, the Doctor comes face to face with the mysterious Missy, and an impossible choice is looming. With Cybermen on the streets of London, old friends unite against old enemies, and the Doctor takes to the air in a startling new role.