Frozen (S04E01)

In the struggling village of Skinton, where post-war shortages are rampant, sisters Lily and Iris hide a precious stash of cakes in their freezer. However, their secret is jeopardized when the freezer malfunctions, prompting the visit of a repairman. What starts as a routine fix spirals into chaos as a shocking murder unfolds, forcing the sisters to confront the dark consequences of their hidden treats.