Ep 4. Episode Four

Sidney and Geordie investigate the murder of a doctor whose death is linked to a patient with a secret addiction. Leonard and Mrs. Maguire both deal with personal revelations, while a cake competition is held at the Vicarage. Meanwhile, Sidney's strong feelings for Amanda take a turn when her husband Guy arrives in Grantchester. As tensions rise between the two men, Sidney finds himself questioning his own moral code and his desire for Amanda. With the clock ticking and Amanda's future uncertain, Sidney must choose between his heart and his duty as a vicar.