Ep 12. The One That Got Away

Sherlock Holmes and Dr. Joan Watson investigate the murder of a young mathematician who had been the subject of intimidation and threats by the International Business Machines Corporation (IBM) for creating a powerful algorithm. Meanwhile, Sherlock is visited by his brother Mycroft, who reveals that their estranged father has been hospitalized and expresses his desire for Sherlock to reconcile with him. Sherlock, who holds a grudge against his father for his drug addiction, is hesitant but eventually agrees to visit. Upon arrival, he discovers that his father has already passed away and begins to unravel the circumstances surrounding his death. As Sherlock delves deeper into the case, he uncovers a conspiracy involving IBM and the mathematician's groundbreaking algorithm, leading to a dangerous confrontation with a high-ranking executive. Meanwhile, Joan struggles with her own personal issues as she comes face to face with her former drug dealer.