11. Dirty Laundry

Complete story — includes the ending

Sherlock and Joan investigate the murder of Teri Purcell, the general manager of a high-end Manhattan hotel, whose body was stuffed into one of the hotel's industrial driers. The woman's background and family seem clean, but a call girl reveals that the victim secretly helped her and her cohorts to ply their trade at the hotel, and at no charge. Teri used the prostitutes to attract high-level diplomats and businessmen to her establishment, where she videotaped them to obtain valuable information. Sherlock discovers Teri was a Russian spy, as is her husband. Teri revealed all this to their daughter Carly, as well as her plans to make the teen a spy too. Carly objected and pushed her mother, causing her to fall and strike her head on a desk, apparently killing her. Teri's handler, Geoffrey Silver disposed of the body and blackmailed Carly into agreeing to become a spy. Teri, however, was not dead. Silver decided that Carly had much greater potential for espionage and killed Teri. Meanwhile, since Joan's time with Sherlock is almost up, he offers her an apprenticeship, but she has already lined up a new client.