Board Thread:The Panopticon/@comment-9435571-20130724194223/@comment-9435571-20130731084514

To quote:

The Master: "It all began after the events of the millennium, when the Doctor's TARDIS brought me to the city of San Francisco".

Charlie Sato: "I've read Doctor Holloway's report. But according to her, you, or rather the body you were occupying, got sucked into the engine of the TARDIS."

"The Eye of Harmony. The singularity which enables us to travel in time. Within the eye there exist elemental forces which would kill any mortal being in a matter of seconds."

"But you weren't killed."

"I am no mortal being. I have acquired the physiology of a deathworm morphant."

"A deathworm morphant?"

"A creature with the ability to subsist in a viscous state. A necessary measure to escape execution by the Dalek Prelature. It also allowed me to exist in the Eye of Harmony. I don't know how long I remained there, trapped within the crashing forces of the black hole, but slowly I was able to project my mind from the singularity, careful not to alert the Doctor to my presence. But then he brought a human to the TARDIS. One of his companions. And then I reached out to him with my mind."

Then he tells about being released from the Eye by Edward Grainger in AUDIO: Forgotten and about all subsequent bodies he possessed until being captured by UNIT.