The Master Returns

Professor Yanas character starts off as a very smart person, the Doctor even compliments him on his high intelligence for the machinery he made from food. But suddenly it all changes. Yana has had this condition since birth where he keeps hearing drums inside his head , with the drums getting louder recently. When he hears The Doctor using suck words as "regeneration" and "TARDIS" only exacerbate the problem.

Also meanwhile Jack and The Doctor have their conversation about why The Doctor abandoned Jack and satellite 5 and The Doctor also explains to Jack what happened to Rose, not only just with her opening the time vertex and bringing him back to life, but also about the death of her and what actually happened. He says he thinks Jacks wrong as he really shouldn't be alive and living.

Yana is then left alone with Martha when he explains the pocket watch to her and with Marthas expressions and surprise he suddenly links it all together.

While Martha runs to tell The Doctor everything, Yana opens the watch and allowing the Time Lord configuration to enter his body. At that moment he suddenly changes into the master and has his mind and personality and well....everything.

Meanwhile The Doctor hears the news from Martha and realises that Yana is is an acronym of "You are not alone", the final words of the Face of Boe. The Doctor soon racers to the office to confront him..... but, hes to late.

Yana is left alone with Chantho and she realises hes changed and goes to shot him but he shots her first, but what he doesn't realise is that she is alive. He locks The Doctor out from the office and Chantho reawakens and shots him,hes ten wounded but Chantho seconds later dies.

With The Doctor left out and the TARDIS door left open The Master enters just in time before The Doctor finally manages to enter, The Doctor says sorry and tries to compromise with The master but before long walking wounded he regenerates into a much younger body - whose voice Martha recognises as Mr. Saxon's or The Master (which ever you prefer to call him) locks the doors to the TARDIS, preventing the Doctor from opening it, and not after long leaves in the TARDIS, stranding the Doctor, Martha, and Jack in the distant future as they face the Futurekind.

With Jack and Martha not being able to hold the door closed for much longer How will they manage to escape? and even more so track Mr. Saxon down before he does anymore damage or even worse takes over the world.

What will they do next??