This is going the way of season 8, where all smart characters lose 20iq after every ep. How on earth does he not remember wildfire, and even if he doesnt remember, surely he must realise cersei would try something to be as vindictive as possible.
One of his men/women was seduced and will probably take a kid hostage... I bet it's either Jasmine or Theresa.. probably the female knight of Theresa...