Premieres Sundays, June 15 – Aug. 3, 2025 at 9 p.m. on KPBS TV / PBS app. Alphy has found a home in Grantchester and a best friend in Geordie, but love eludes him until a new case sparks an unexpected romance. Meanwhile, Geordie wrestles with expectations for his son, and Cathy takes steps to advance her career.