Trailer

https://www.youtube.com/watch?v=0QLxIBkewLw

Pretty serious stuff and shot gorgeously!
Possibly too serious, there's a danger that like with the darkest Poirots that stopped using David Suchet's lighter talents, Rowan Atkinson playing it so straight might be a mistake if there's no subtle hints at humor here and there, at least with his wife. Fingers crossed it's good though!