Tamara Lawrance excels in Marlon James’s classy Caribbean crime drama; the Duchess of Sussex tilts at lifestyle greatness; and a moving drama puts the case for Ruth Ellis. Plus, murder most racy in the BBC’s new Agatha Christie

Get Millie Black (Channel 4) | channel4.com
With Love, Meghan (Netflix)
A Cruel Love: The Ruth Ellis Story (ITV1) | itv.com
Towards Zero (BBC One) | iPlayer

Well, here’s something. New five-part Channel 4 detective drama Get Millie Black, mainly set in Kingston, Jamaica, is the first TV show created and written by Booker-winning Jamaican author Marlon James (A Brief History 0f Seven Killings), and its literary bent is evident from the off.