what is the plot in chapter 5 6

In this section, three "threads" lead to dead-ends. On the one hand, this presents obstacles that challenge our detective. In chapter 6, Watson inspires Holmes's genius not by collaborating on his interpretations, but rather on relating facts that Holmes can then use to deduce hidden truths. As a doctor, Watson is well-acquainted with the importance of detail, an approach Holmes takes to a singular level.