Dr.Jekyll made a drug to make a dark side when he takes it
By Day hes a kind Doctor.
By Night hes a mean evil monster.
Then he stops taking the drug because he turning in Mr.Hyde with out using the magic drug, So he says he won´t take it anymore.
The when he takes his drug he kills a old man his maid watched him kill that old man know Mr.Hyde is known as a murderer. So he locks him self in his lab for i think a month or more so thruw out that time period he disides to kill him self :C
So he makes a letter for the people to find then if Mr.Hyde finds it he will rip it up if he finds out he made a letter so then he kills him self