As you may know, TTG gave out a list a long time ago of the name of the chapters, well here are the CONFIRMED chapter names of Episode 5:
Chapter 1 - Into The Fire
Chapter 2 - Twice Sky
Chapter 3 - There Ain't No Way
Chapter 4 - Mercy
Chapter 5 - The Marsh House
Chapter 6 - What's In The Bag?
Chapter 7 - Stay Close To Me
Chapter 8 - What Remains
And this is what I think will happen in each one..
Chapter 1 - Into The Fire:
Possibly something to do with the horde of zombies on the ground floor.
Chapter 2 - Twice Sky:
The only one I have no clue on.
Chapter 3 - There Ain't No Way:
Possibly, to do with the interrogator on the walkie-talkie doing something to the group that we really won't expect.
Chapter 4 - Mercy:
Lee about to kill the walkie-talkie man.
Chapter 5 - The Marsh House:
When we meet Clementine's parents for the first time. In ep.3 Clementine mentions about the marsh house being where her parents could be staying.
Chapter 6 - What's In The Bag?:
Hmmm... we'll have to wait and see...
Chapter 7 - Stay Close To Me:
Lee staying close to Clementine after knowing he's going to die from the bite. Along with Clementine being upset.
Chapter 8 - What Remains:
Everything all sad, Lee's "funeral"
Well that's my guess anywayzzzz