Warning ! Don't open and scroll on these posts if you want to keep the surprise for the final Chapter 4 release.
Today I worked on the last person to investigate : Karlton!

There's a little cutscene before Fiona can actually enter the Laboratory. Once inside, we discover a new look for Karlton.

The idea in this area is that Fiona have just enought time to investigate one of three things.

Fiona can either tamper with the reality machine from previous day, listen to Karlton on phone or scan Judy's notes.
The machine is really just a way to recycle one of the bad endings from previous days.

The scene itself needs a bit more polish but you can have a good idea what happens when Fiona do it.
The other two options give different items that going to be used later in game.

Whatever the item you got, the scene end up the same way and should lead to another scene with Eclair at the Nursery.
That's all I got for today! I guess I'll work some extra hours to have the game ready to play for the next demo. Next month, I'll probably integrate more of the storyline and do some polish!