Dr. Lanyon receives a letter from Dr. Jekyll, asking him, in the name of their long and esteemed friendship, to perform a complicated favor.
The favor involves breaking and entering into Dr. Jekyll’s laboratory and giving some potions to a messenger that will arrive at Dr. Lanyon’s house at midnight.
Dr. Lanyon does as the letter requests.
Mr. Hyde shows up eager to take the chemicals. He’s wearing clothes that are much too big for him.
He takes the chemicals and transforms into Dr. Henry Jekyll.
This is quite a disturbing sight, especially for a man of science such as Dr. Lanyon.