Emma Thompson is in talks to join Men in Black 3. Yes, Nanny McPhee is going black, baby.

Barry Sonnenfeld's sci-fi sequel sees Will Smith and Tommy Lee Jones reunite as Agent Jay and Kay, who have to travel back in time to 1969 for some unknown reason (which will presumably be better than the guff that passed for story in MIB 2). There they meet Josh Brolin, playing the young Agent Kay.

Somewhere in there fits evil villain Yaz, playing by Jemaine Clement. And also involved is Agent Oh - Emma Thompson - who takes charge of the MIB team when monitoring a prison breakout.

That's all the plot details revealed so far by Sony's secretive 3D project. But David Koepp's given the script a once-over, so hopes are moderately raised. Shooting starts later this month.