Between forensic tests and stakeouts, Watson was fighting a different kind of battle. Sherlock's father, the elusive and wealthy Morland Holmes, was in town and demanding a dinner with his son.
To get Watson off his back, Sherlock pulled a "clever-cruel" prank, hiring his friend Allistair to impersonate his father at the dinner. [S1E6] Flight Risk
As Sherlock unraveled the motives involving rival law firms and aviation logistics, he moved through the city like a man possessed, dismissive of any distraction—especially the one Joan Watson was trying to orchestrate. The Elusive Father Between forensic tests and stakeouts