Mother Knows Best

S5, E4: Portwenn is buzzing with excitement over a charity run, but the fundraiser sparks a culinary rivalry between Bert Large’s restaurant and the Crab and Lobster pub. Louisa's annoyance over her mother Eleanor's unannounced visit soon turns to relief, as she seems to have a knack for getting the baby to sleep soundly. But things take a turn when Louisa and Martin learn more about her unorthodox methods of childcare.