PTCS: A post Traumatic Christmas Special is a mod for Half-Life 2: Episode Two, created by Ethosaur.
Description (in authorís own words):
Welcome to PTCS, a very late short story addition to the PTSD series! This was originally meant to be uploaded on Christmas, then new years eve. Sadly it got pushed further and further. But I decided to release it now finally. Hope you enjoy this silly little mod.
Extract into "SourceMods" inside Steamís installation folder.
Report problems with download to firstname.lastname@example.org