Read it through once

“Well, sir, it went so quick, and the creature was so doubled up, that I could hardly swear to that,” was the answer. “But if you mean, was it Mr. Hyde?—why, yes, I think it was! You see, it was much of the same bigness; and it had the same quick, light way with it; and then who else could have got in by the laboratory door? You have not forgot, sir, that at the time of the murder he had still the key with him? But that’s not all. I don’t know, Mr. Utterson, if you ever met this Mr. Hyde?”