For a few months, Jekyll acts especially friendly and sociable, as if a weight has been lifted from his shoulders. But then Jekyll suddenly begins to refuse visitors, and Lanyon dies from some kind of shock he received in connection with Jekyll. Before dying, however, Lanyon gives Utterson a letter, with instructions that he not open it until after Jekyll’s death. Meanwhile, Utterson goes out walking with Enfield, and they see Jekyll at a window of his laboratory; the three men begin to converse, but a look of horror comes over Jekyll’s face, and he slams the window and disappears. Soon afterward, Jekyll’s butler, Mr. Poole, visits Utterson in a state of desperation: Jekyll has secluded himself in his laboratory for several weeks, and now the voice that comes from the room sounds nothing like the doctor’s. Utterson and Poole travel to Jekyll’s house through empty, windswept, sinister streets; once there, they find the servants huddled together in fear. After arguing for a time, the two of them resolve to break into Jekyll’s laboratory. Inside, they find the body of Hyde, wearing Jekyll’s clothes and apparently dead by suicide—and a letter from Jekyll to Utterson promising to explain everything.