Question

What imformation from the story helps you check the prediction that Dr. Lanyon will reveal shocking information about Dr. Jekyll?

Answer 1

“Within there was another enclosure, likewise sealed, and marked upon the cover as ‘not to be opened till the death or disappearance of Dr. Henry Jekyll.’”

Step-by-step explanation:

Answer 2

There is an envelope marked with the instructions that it is not to be opened until the death or disappearance of Dr. Jekyll. This implies that Dr. Lanyon knew something secret, but was unwilling to reveal it at first. He waited until there was no more "hope" of Dr. Jekyll staying normal.