Series 4

Behind-the-scenes look at the making of Doctor Who. Catherine Tate returns as the unstoppable Donna Noble. In her search for The Doctor, Donna finds herself face-to-face with the mighty Miss Foster and a larger-than-life threat against mankind. With the tension rising, the programme gets up close and personal with the Doctor's latest companion from her first days on set through to her battle against an army of sinister Adipose. Features interviews with Tate, David Tennant and Sarah Lancashire.

Behind-the-scenes look at the making of Doctor Who. There's a trip to Rome to witness the making of the Doctor's latest volcanic voyage. Filming at the famous Cinecitta Studios, the production team face an Italian job of colossal proportions, while David Tennant heads up Pompeii and climbs Mount Vesuvius.

Behind-the-scenes look at the making of Doctor Who. There's a trip to the Ood Sphere to witness the return of the mysterious Ood to the world of the Doctor, and a look at the various methods which go into making an Ood. Plus, how a quarry in Wales in the middle of summer gets turned into a winter wonderland, and David Tennant gets turned into an all-action hero to escape a mechanical menace. Featuring interviews with Tennant, Catherine Tate, and writer Russell T Davies.

Behind-the-scenes look at the making of Doctor Who. Former companion Martha Jones is back and the Earth is under threat from an arch-enemy. From location, there's all the backstage action from the Doctor's latest gripping adventure. As confusion abounds, the Time Lord, Donna and Martha join forces in a battle to save the human race. Featuring interviews with David Tennant, Catherine Tate, Freema Agyeman and Russell T Davies.

For the first time in over 20 years, the Sontarans are back as Confidential explores the return of the ultimate warrior race. We speak to David Tennant and Colin Baker and go behind the scenes to look at the explosive Sontaran Invasion against U.N.I.T. forces.

Behind-the-scenes look at the making of Doctor Who. There's a new kid on the block and the Doctor isn't impressed, as his daughter Jenny bounds into view, and a look back through the Doctor's generation time line to find out why two Doctors can sometimes be better than one. Featuring interviews with David Tennant, Peter Davison, Georgia Moffett and Russell T Davies.

Behind-the-scenes look at the making of Doctor Who. The Doctor and Donna travel back to the 1920s and enjoy an unexpected encounter with Agatha Christie. All is well until the party reveals an unwanted guest with a sting in its tail. We find out exactly what goes into creating a classic murder mystery, what it's like behind the scenes with such a big ensemble cast and discover the mysterious events surrounding the real Agatha Christie. Features interviews with David Tennant and Fenella Woolgar.

Behind-the-scenes look at the making of Doctor Who. The Doctor and Donna are on the set of the eerie Library Planet to confront the monsters of the dark, the vicious Vashta Nerada. There's a look at how these shadowy creatures are created, how a disused library in Swansea became the setting for all the universe's books, how the effects boys and crew take it in turns to fire books in the general direction of David Tennant and how writer Steven Moffat has contributed to the series.

Behind-the-scenes look at the making of Doctor Who. Alex Kingston talks about her role as time-travelling archaeologist River Song, the sinister world of the library is explored and there's a feature on the mysterious Dr Moon and Donna's adventures away from the Doctor. Writer Russell T Davies discusses the programme's mythology and renewed success.

Behind-the-scenes look at the making of Doctor Who. The travelling Timelord swaps his TARDIS for alternative transport, the secrets behind things that go bump in the night are revealed and there's a look at how the sound team put together the complicated soundscape of the programme. Featuring exclusive interviews with David Tennant, Russell T Davies, Lesley Sharp, David Troughton, Lindsey Coulson, Daniel Ryan and Colin Morgan.

Behind-the-scenes look at the making of Doctor Who. The world is in crisis and there's only one person who can save it, but it's not who you might think. Witness the world without the Doctor, travels backstage with the TARDIS, and takes a stroll down the exotic Shan Shen Alley. There is also the return of an old friend to the show in the shape of Rose Tyler. Featuring an exclusive interview with Billie Piper and contributions from Catherine Tate, David Tennant and Russell T Davies.

Behind-the-scenes look at the making of Doctor Who. With The Doctor's oldest adversaries back and badder than ever, a look inside the dark and deadly world of the Daleks. From their creation 45 years ago to their latest incarnation, the lid is lifted on TV's most popular aliens. Learn what first inspired the iconic Dalek design, see how they are brought so terrifyingly to life, and discover just what Daleks get up to between takes when they're not conquering the universe. With exclusive interviews from David Tennant, Russell T Davies, director Graeme Harper, art director Ed Thomas and original Dalek designer Ray Cusick, plus, as all the different Doctor Who worlds collide, the biggest ever collection of companions are quizzed on what it's been like teaming up to take on the evil exterminators.

Behind-the-scenes look at the making of Doctor Who. It's the nail-biting finale to series four and the Doctor's arch enemy brings the universe to the brink of extinction. Featuring highlights from the climactic battle in the Crucible and interviews with David Tennant, Billie Piper, Catherine Tate, Freema Agyeman, Russell T Davies, Julie Gardner and Phil Collinson, as they reflect on the highs and lows of the two companions' amazing journey through the series.