Given that Lady Tressilian rarely leaves her boudoir, it was an enjoyable role. “I was very happily in bed, one of my favorite places, generally,” says Anjelica Huston, of the regal aristo she plays in the new BBC adaptation of the 1944 Agatha Christie mystery Towards Zero.

Despite the fact she is mostly horizontal, occasionally at a chair by the window and peering through a telescope at the Devon bay beyond, Tressilian is a domineering character, presiding over the younger relations she has assembled at her seaside home and making her displeasure known at their various life choices. There will, of course, be murders.