Hyacinth is Alarmed (S05E03)

Richard is jolted awake by Hyacinth’s unsettling smile, only to remember he has completely overlooked their wedding anniversary. In a panic, he opts to have an alarm system installed, presenting it as a "surprise" gift for Hyacinth to distract her from his blunder. As he navigates the chaos of their anniversary, Richard hopes that this unexpected gesture will smooth over his forgetfulness.