Summary:
The story begins.
They make it to Reichenbach Falls, and so a Swiss boy comes, bearing a letter begging for Watson’s return.
Watson takes his leave, pausing at the bottom of the hill’s trail to look back. Surprisingly, where he had once walked a new man is now scurrying. The stranger turns his head just so, revealing himself to be a stranger not at all.
With the coldest sense of horror, Watson begins his race back up.
A little while later, Watson wakes up for the second time on the morning of May 4th, 1891.
—
In which Watson disrupts Moriarty’s murderous attempt on Holmes’ life. Except that is not how the story can go.