That was right; now he would not be back for half-an-hour.
I crawled and scrambled, and crept along like a snake until little by little I got to the gate through the last wall but one.

The lock here was not so easy as the cell door, and took me more time.

While I stood there I was in a regular tremble with fright, thinking some one might come up, and all my chance would be gone.

After a bit the lock gave way, and I found myself in the outer yard.

I went over to the wall and crept along it till I came to one of the angles.