The spanking scene is HOT, and fun to watch. Totally pretending to be non-consensual, but as it is a fictional story, and the actors are paid and agreed to play the scene, who am I to complain. You can watch the episode " The Reckoning" at about 25 minutes, or click the first link.
Plus, the actress, Caitriona Balfe is very beautiful, and throughout the series you get a lot of views of her gorgeous nude body.
The show has some fun ideas for the era, where the next episode (By the pricking of my thumbs) has Sam Heughan, one of the main actors orally pleasing Caitriona! I wonder how they justify this scene, if you think of the era. Bathing was not a daily activity, specially in the Scottish Highlands, so it would take a brave man to be so readily interested.
Wonder what comes next... Don't tell me, i am watching the episodes on a DVD. Definitely, Caitriona is a very beautiful actor