Spanking Caning and Adultery

Marcus is married to a stunning Swedish wife named Heidi. He is delighted to discover that Heidi loves to be spanked. She regularly misbehaves so that Marcus spanks her. They both find this very exciting.
After a while Marcus introduces a big smooth rubber soled gym shoe to the spankings. He is disappointed to discover that Heidi complains that the plimsoll is too severe for her, and she starts to misbehave less after its introduction.
Marcus cannot understand why Heidi has such a problem with the plimsoll, but he is far too embarrassed to let his wife try it out on him.
One day Heidi´s friend Anna appears, she is also Swedish and even more stunning than Heidi.
Marcus cannot believe his luck on meeting Anna.
The honey trap is set!