I was just trying to remember how the last series ended and found this on Wiki which was a real cliffhanger:
The village prepares for Al and Morwenna's wedding. Ruth shows Louisa that young James is highly gifted and reminds her that, unlike Martin, James has two loving parents. Martin vomits during a surgery designed to test his control, and, at the wedding, he tells Louisa that he is no longer practising medicine. She replies with the news that she is pregnant.