My rating: 3 of 5 stars
A governess who has been struggling to find work is suddenly provided with a too-good-to-be-true offer by a corpulent gentleman and his wife, who have some strange requests for her behaviour. Is her new employer hiding something? Yes, they are. Obviously.
Another short story which has Sherlock solving the case by simply disproving a number of theories that he had come up with prior to even leaving Baker St., leaving the one remaining solution.