The Memoirs of Sherlock Holmes (1994)

Starring: Jeremy Brett, Joanna David and Ciaran Hinds as Jim Browner.
Episode: #1.6 "The Cardboard Box"
Synopsis: When Susan Cushing asks Sherlock Holmes to investigate the mysterious disappearance of her sister, Mary, the detective shows little interest in a mere missing persons case. But when Susan receives a grisly Christmas gift in a plain cardboard box, and a third sister, Sarah, seems to understand the implied meaning in the strange present, Holmes can no longer resist the challenge.