Fringe Season 2 Episode 23 (Fringe s02e23) with title “Over There, Part 2″ airs on Thursday, May 20th 2010 at via.. FOX 09:00 pm
Here is summary for Fringe Season 2 Episode 23 :

In season 2 finale, Olivia and also Walter’s mission to the other side continues, with the fate of both universes and some key individuals very much up in the air.

Few hours after original series aired on TV, online streaming video for Fringe Season 2 Episode 23 usually available on Net and of course, if video available, as soon as possible will show you where you can watch this episode for free.