The CW has released a very short description for Part One and Part Two of The 100′s Season 3 finale :
Perverse Instantiation – Part One
Clarke (Eliza Taylor) finds hope in the most unlikely place. Meanwhile, Alie’s (guest star Erica Cerra) master plan comes together.
Perverse Instantiation – Part Two
In the season’s epic and mind-bending conclusion, our heroes begin to face the reality of their tragic situation. Everyone prepares for a final showdown.
We have a synopsis of “Stealing Fire” : 03×09, on March 31.
Clarke discovers a shocking truth, and Octavia is forced to make a decision that could have devastating consequences. Meanwhile, Kane and Abby share a moment.
“Fallen” : 03×10, on April 7.
Jaha employs a terrifying new method to convince Abby to join his cause, Kane is on a mission, and Bellamy is hit with a hard truth. Meanwhile, Monty finds himself in a precarious situation, and Jasper rushes to save one of his own.