Explain the relationship between Dr. Watson and Sherlock Holmes, in the hound of the Baskervilles

The relationship between Dr. John Watson & Sherlock Holmes is restricted due to Mr. Holmes struggling with addiction.

Sherlock and John visit Henry Knight, who tells them about the words "Liberty" and "In" he sees in his dreams. Sherlock convinces Henry to visit the moor in the hope of confronting the beast. Along the way, John gets distracted and follows his own path where he notices what seems to be a Morse-code signal. Meanwhile, Sherlock and Henry arrive at the center of the hollow, where they suddenly hear growling. John finally arrives at the top of the hollow just as Henry sees the beast and panics. The three of them leave in a hurry, Sherlock claiming to have not seen anything.

Sherlock then admits to Watson that he saw the hound. Causing them to bond closer in fear. As they're both shook up. At the end, both men have a strong and respected relationship with one another