Free spirited cookie baker Hannah Swensen jumps in to help a handsome new detective track down the culprit and uncover the mystery surrounding the death of her friend and local milk delivery man.

British amateur bakers compete in a series of weekly baking challenges, each episode introducing a new technical skill and a challenge in each of three categories: Sigature Bake, to test creative flair and basic baking ability; Technical Bake, in which contestants are given basic recipes consisting of an ingredients list and minimal instruction; and Showstopper Bake, designed to display baking virtuosity.

Free-spirited cookie baker Hannah Swensen jumps in to help handsome detective Mike Kingston track down culprits and uncover mysteries in Lake Eden, Minnesota.

Follow the trials and tribulations of passionate amateur bakers whose goal is to be named the U.K.'s best. Each week, the bakers tackle a different skill, the difficulty of which increases as the competition unfolds, judged by Mary Berry and Paul Hollywood.