The safe is empty at present, so you will not need to go to it.

I am locking them up," he added, taking a key from his pocket, "and there is the key.

Now you understand ?" "But surely, sir," Arnold began,-- "The matter is quite simple," Mr.Weatherley interrupted, sharply.
"To put it plainly, if I am missing at any time, if anything should happen to me, or if I should disappear, go to that safe, take out the letters, open your own and deliver the other.

That is all you have to do." "Quite so, sir," Arnold replied.

"I understand perfectly.