This is one of those productions that combine really interesting characters within a story that has enough twists and turns to hold your interest, despite its rather tenuous link to real life events. What really drives this show along are the period details, the 'mood' and feel of the thing, and the solid acting by almost everyone involved. I felt 'Leonard' was the least effective character and the actor wasn't that convincing either. But Toby Jones and Ms Riseborough were too-notch in their performances. The pace was slow, filled with tension and showed how the various stratas of society dealt with the aftermath of a devastating war. The psychological damage was the most obvious, resulting in murder and an almost carefree attitude about the whole process and planning of it. This is a short story that is probably one of Ms. Christie's most damning condemnations of war and although adapted by Sarah Phelps, has definitely stayed true to the original intent. It's not light entertainment but worth watching, despite the fact that the lighting was just a bit too obvious in trying to create a certain 'atmosphere'.