Dear Jack,
As you know it gives me great pleasure to pass on as many of Torchwood Towers little annoyances to you as I can. So in this tradition please expect the arrival at your headquarters this morning of one Sarah Jane Smith. Ms. Smith is either an undercover journalist, a time agent or a lunatic and possibly more than one of these things. Whatever she is, she is now officially Torchwood Three's problem. Have fun.
Sincerely,
Yvonne Hartman.
P.S If she turns out to be a time agent we'll want her back for interrogation.
Long live the British Empire