Short answers, pulled from the story.
Robert Louis Stevenson wrote the novella in Bournemouth during 186. He moved to this southern English seaside town in 184 to benefit from the sea air and warmer climate for his health.
Lloyd Osbourne doubted if the first draft took longer than three days. Stevenson rewrote the story over a period of three to six days before refining it further for four to six weeks.
A servant sees Hyde beat Sir Danvers Carew to death on an October night. The police contact Utterson who leads officers to Hyde's apartment in Soho where they find half a broken cane which Utterson recognizes as one he had given to Jekyll.
The American publisher issued the book on the 5th of January 1886 four days before the first appearance of the UK edition issued by Longmans. Stores did not stock it until a review appeared in The Times on the 25th of January 1886 giving it favourable reception.
Richard Mansfield bought rights from Stevenson and worked with Boston author Thomas Russell Sullivan to write a script adding female characters to the originally male-centred plot. The first performance took place in the Boston Museum in May 1887 creating horrified reactions through lighting effects and makeup for transformation scenes.