Heroes Episodes :- Dual

Sylar has locked and trapped four people: Noah, Claire, Angela and Meredith. They have been subjected to mind games. Matt, Ando and Daphne find them selves at Isaac’s apartment. Daphne makes a plan to get some of the secret formula to Ando who can use it to save his friend Hiro, who is still battling with his old self.  Peter is making an attempt to stop Mohinder from duplicating the formula and has to face Nathan, Tracy and the security at the building. He is backed up by Knox and by Flint and this battle ends up in a big showdown for everyone who is involved.