In Prison wih Jagiello
This is an illustration from teh seventh novel 'Surgeon's Mate' of the inside of the Grand prison in Paris, where Cpt Aubrey and Dr Maturin along with thier Swedish companion Gedymin Jagiello are held as spys and captives of war.
Here Jagiello is perched waving to the pretty lady he first spots on the other side of the wall, the grand scheme is to get her to help them escape. Jack and Stephen have both resigned themselves to being too old for that sort of game so they leave it to him to woo her. Here they quip at his endevours.