Splice of Life: Reality Evolution

Mohinder and Elle are stuck in a room filling up with water.  Mohinder can save himself by crawling up a ladder and into a water tight box, or find the key to release Elle's shackles and risk getting shocked.  He goes to play hero, but Elle is convinced that there's only room enough in the box for her.  She kills Mohinder 'accidentally' when he saves her because she's afraid there's only air for one in the box.

He comes back a few days later, disoriented.  Elle comes over to flirt and they both head over to say hello to Zane.  Who...turns out to be Sylar.  Cue pain.  Lots and lots of pain.

Elle and Mohinder eventually move to an unoccupied suite.