Oliver interrupts Alexander and Lucy's dance practise, telling Alexander that if he wins the ballroom dance competition, he'll tell him who took his sight. Lady Rose Dalton the owner of the house hosting the competition, shows Father Brown, Mrs McCarthy and Bunty around. Noticing Alexander across the hall, Bunty approaches him to take her for a spin. Merryn, Oliver's dance partner, unpacks her things with the help of Lucy, who shows off her new necklace. Back in the hall, Lucy interrupts Alexander and Bunty to practice, but Oliver notices the necklace and tension begins to rise. Storming out, the next time anyone sees Lucy, she is lying in her own blood, a stab wound to her heart.
