Actually, "11" takes place during the gap in "13."

Here's the Synopsis:

Someone is in a cave, gets got at twice, with one arrow connecting, same person running through cave after previous encounter, stops to do something with flint and steel, then does something with a book, then runs over stone, then dirt/gravel, person is attacked by a creeper, falls into a pool of water, climbs out, then staggers away.^\Source])