Michael lost everything and Donald became the new mayor of Caster bridge. Lucetta dies after she hears that people now know that Michael and her had a relationship and that she was the author of the letters. Michael's oath ended and he started to drink again.
Elizabeth-Jane's biological father reappeared again which caused Michael to move away. Elizabeth-Jane and Donald got married with the help of Elizabeth-Jane's dad. The truth of what Michael did was revealed and when Elizabeth-Jane tried to look for Michael again it was too late. Elizabeth-Jane was informed that had died.