At some unknown point in time, Mr. Hyde comes to life when Dr. Jekyll drinks a special potion.
For a time, Mr. Hyde comes to life whenever Dr. Jekyll doesn’t feel like being respectable.
Mr. Hyde participates in "undignified" pleasures that soon turned to the "monstrous."
Then he tramples a child, witnessed by Mr. Enfield.
He writes a check in Dr. Jekyll’s name, then opens a bank account for himself—the signature is merely Dr. Jekyll’s handwriting, sloped backwards.
Two months before the murder of Sir Danvers, Dr. Jekyll goes to bed and then awakes as Mr. Hyde.
Dr. Jekyll notes that Mr. Hyde’s body has been growing larger, as if from "a more generous tide of blood." He is also more strong-willed.
For two months, Dr. Jekyll refrains from drinking the potion, and Mr. Hyde remains hidden.
In a moment of "moral weakness," Dr. Jekyll drinks the potion and Mr. Hyde emerges stronger than ever. The beast is out of the cage.
When a passerby stops him, Mr. Hyde beats the man to death.
Dr. Jekyll resolves to lay Mr. Hyde to rest forever, but commits some sin that "tips the balance of his soul" toward evil.
Mr. Hyde takes control of Dr. Jekyll’s body one day at Regent’s Park.
Away from his potions and a wanted man for murder, Mr. Hyde runs into a hotel and stays there after penning messages to Dr. Jekyll’s friend (Dr. Lanyon) and Dr. Jekyll’s butler, delivering a complex series of instructions.
Mr. Hyde goes to Dr. Lanyon’s house to get the potion.
Warning Dr. Lanyon that he is about to see something extraordinary, Mr. Hyde drinks the potion and transforms into Dr. Jekyll.
The next morning, Dr. Jekyll is relieved and walking in his courtyard, on his way to the laboratory, when he again transforms into Mr. Hyde.
It takes a double dose to recall Dr. Jekyll.
Six hours later, Mr. Hyde again takes over.
From that point on, Mr. Hyde is the dominant personality, and Dr. Jekyll struggles helplessly to assert himself.
At this point Dr. Jekyll realizes that Mr. Hyde is afraid of death and that only fear of the gallows allows Dr. Jekyll to resume his identity.
However, because Dr. Jekyll really dislikes Mr. Hyde at this point, Mr. Hyde begins to really hate Dr. Jekyll.
Mr. Hyde plays lots of tricks on Dr. Jekyll, like defacing his favorite books and burning his letters.
But since Mr. Hyde is afraid to die, he fears that Dr. Jekyll will simply commit suicide. Because of this, Dr. Jekyll pities Mr. Hyde.
Because Dr. Jekyll runs out of potion, Mr. Hyde is given full rein.
Mr. Hyde eventually kills himself, and is found (dead) by Mr. Utterson and Poole.