The 'fugue state' seems very unlikely to me. I'd guess that Agatha had some plot against her husband, and then used that as an excuse when things didn't go as p

The 'fugue state' seems very unlikely to me. I'd guess that Agatha had some plot against her husband, and then used that as an excuse when things didn't go as planned. What the plot was though, I have no idea. It looks like she was framing him for her murder, but that would involve her going missing permanently. Which is both a big sacrifice and very hard to pull off when you are Agatha Christie.