
The Rule of Three: Lauren's C-section takes a dangerous turn when her obstetrician collapses. Meanwhile, Watson and Mary's search for a renowned surgeon is disrupted by a storm. (S2, ep 19)

The Cobalt Fissure: A seemingly random murder outside the hospital sets the stage for the arrival of someone from Watson and Sherlock's past. (S2, ep 20)

The Cobalt Fissure: A seemingly random murder outside the hospital sets the stage for the arrival of someone from Watson and Sherlock's past. (S2, ep 20)

The Cobalt Fissure: A seemingly random murder outside the hospital sets the stage for the arrival of someone from Watson and Sherlock's past. (S2, ep 20)

The Cobalt Fissure: A seemingly random murder outside the hospital sets the stage for the arrival of someone from Watson and Sherlock's past. (S2, ep 20)