Back by popular demand, David Tennant returns to the Totally sofa to talk all things 'School Reunion', Liz gets hands on with giving the Daleks their signature colour and 'Companion Academy' cadets face the dreaded mousetrap challenge.

In the final episode of the series, Elizabeth Sladen who played Sarah Jane Smith joins the Totally sofa along with the man behind the Daleks and the Cybermen Nicholas Briggs. K9 handler and controller Matt Irvine is also in the studio while we find out the winner of Companion Academy.

In Episode 1, Noel Clarke is in the studio talking all things Mickey and we meet the first to step foot in the 'Companion Academy'.

The leader of the Cybermen pack, Paul Kasey joins the Totally studio revealing all about being inside the mighty costume. Companion Academy are put through their paces this week and Liz goes behind the scenes on the foley sound FX on Doctor Who.

The Doctor himself, David Tennant is in the studio giving the low-down from the opening episode from Series 2. Also the 'Totally Team' prepare for a surprise birthday party for David Tennant.

This week on Totally, the girl in the fireplace actress, Jessica Atkins joins the studio and Barney and Liz get hands on with styling a clockwork droid wig. Also Camille Coduri talks all things Who on the Totally sofa.

Head Doctor Who writer and all round master Russell T Davies is in the Totally studio talking all things Who and answers some of the BIG questions about working on Doctor Who. Meanwhile Barney takes us behind the scenes on his Doctor Who cameo...

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Straight from the black hole, MyAnna Buring aka Scootie talks about the Impossible Planet and a tricky underwater scene. Barney leaves the studio as well to track down his very own UFO with no luck.

Totally this week create they're very own art filled bedroom with taking inspiration from Chloe Webber aka Abisola Agbaje. It's the the penultimate moment for Companion Academy.

Noel Clarke is back in the studio answering questions sent in by the fans, discussing behind the scenes secrets and the difficulties on set when working on Doctor Who.

Doctor Who choreographer Kevin McCurdy is in the Totally studio giving a masterclass on staging an intimate fight safely and hidden tricks of the trade. Making a bang on Doctor Who is never as easy as it looks as special FX supervisor Danny Hargreaves reveals the precautions needed to give an episode of Doctor Who that something extra.

Actor Andrew Hayden-Smith sits down with Barney and Liz talking about joining the world of Doctor Who and Totally go behind the scenes with the return of the Cybermen...