Sammy returns to London to escape the heat of the missing person’s case. But back in Australia, Detective Sergeant Fairbank has the Cooper family firmly under the microscope.

With Jo now co-managing Cachet Windows, she uses her power to expose Lavender and Sam’s past, gaining the upper hand over Vincent.

Lady Felicia loses her singing voice. Father Brown investigates the murder of a local aeronautics magnate.

Isobel finds herself at odds with Violet. Mary is introduced to a potential suitor but wants to be with Matthew. Anna works out who stole a valuable snuff box. O’Brien…