What happened in Lost season 5?

Here's the complete episode guide for Lost Season 5:

* 5.1/5.2: "Because You Left" and "The Lie"
* 5.3: "Jughead"
*5.4: "The Little Prince"
* 5.5: "This Place is Death"
* 5.6: "316"
* 5.7: "The Life and Death of Jeremy Bentham"
* 5.8: "LaFleur"
* 5.9: "Namaste"
* 5.10: "He's Our You"
* 5.11: "Whatever Happened Happened"
* 5. 12: "Dead is Dead"
* 5.13: "Some Like it Hoth"
* 5.14: "The Variable"
* 5.15: "Follow the Leader"
* 5/16/5.17: "The Incident" parts 1 and 2