Emma is 30, single and, frankly, desperate. She woke up this morning with nothing to look forward to but another evening of unsuccessful speed-dating. But now she has a new weapon in her search for Mr Right. And it's made her almost perfect.

Gwen Cooper woke up this morning expecting the unexpected. As usual. She went to work and found a skeleton at a table for two, and a colleague in a surprisingly glamorous dress. Perfect.

Ianto Jones woke up this morning with no memory of last night. He went to work, where he caused amusement, suspicion and a little bit of jealousy. Because Ianto Jones woke up this morning in the body of a woman. And he's looking just about perfect.

Jack Harkness has always had his doubts about Perfection.