It was towards the end of last season and I think it was the episode where The Master died maybe. What was it called, anyone?

That was The Last of the Timelords....

Last of the Time Lords, right at the end of the last episode of series 3.

well that was never outright confirmed, but it was hinted at in last of the timelords.

Well I think they made it pretty obvious.

Thanks everyone for that. I will see if I can get hold of it or check out you-tube to catch that bit again...

I just think it may be important. Or not.