Here is some information I found about Monday episode.
Thanks to spoilerfix.com/heroes.php
There is some spoiler information on this site.



Episode 2.04: The Kindness of Strangers
Airdate: October 15, 2007

09/30 - Between shifts at a local fast food joint, Monica Dawson begins to exhibit some unexpected new abilities unbeknownst to her brother Damon (guest star Carlon Jeffery), grandmother Nana (guest star Nichelle Nichols), and cousin Michah. Angela Petrelli makes a shocking confession as new information about the previous generation of Heroes is revealed. With Molly's "boogyman" continuing to turn her dreams into nightmares, Matt asks her to put aside her fears and locate him on a map -- with terrible results. Suspecting Claire has a new boyfriend, H.R.G. fears for the future. As they get closer to the U.S., Maya and Alejandro make a grim discovery on the road. David Anders, James Kyson Lee, Masi Oka, Adrian Pasdar, Zachary Quinto, Sendhil Ramamurthy, Milo Ventimiglia also star. Randall Bentley, Ashley Crow, Barry Shabaka Henley and Jimmy Jean-Louis guest star. Source: NBC
09/26 - drops quite a bombshell in the October 15 episode. "Yes, the shocking confession. It's about the murder. She is in the thick of it. She has a lot of secrets, and she'll be doling them out," Source: TV Guide Online
08/17 - Showing up in the season's fourth episode, 'll play Nana, a New Orleans doyenne whose daughter died during Hurricane Katrina. "Nana is tough and undaunted and - like the blues - she just keeps rising to the occasion," Nichols says. The character, who is in dire financial straits, has moved back into her once-flooded home, where she cares for her two grandchildren. One of them, new hero Monica (The Nine's Dana Davis), is an avenging angel intent on bringing justice to the corruption-plagued Big Easy. Nana is also a great-aunt to Micah, the junior hero played by series regular Noah Gray-Cabey. "Micah is sent to New Orleans to live with the family," Nichols says. "It's a quite marvelous, magical story, with wonderful things emerging." Source: TV Guide Online
08/14 - The Heroes creator has called upon Nichelle Nichols, aka USS Enterprise communications officer Lt. Uhura, to fill a short-term role. Nichols, an NBC rep tells TVGuide.com, will be playing Nana, the New Orleans-based grandmother of Monica (the new hero being played by The Nine's Dana Davis). Source: TV Guide Online
08/13 - Earlier this week Heroes creator Tim Kring told E! News that he was looking "for another face that will have a very similar impact" to Takei when he came onto the show. Now TrekMovie.com can reveal the 'face' Kring was talking about is none other than Nichelle Nichols, the original Uhura. <...> Nichols confirmed that she will have a recurring role, but couldn't give any more details - noting the show's penchant for secrecy. According to our source Nichols will appear in 5-6 episodes of the second season of Heroes. Source: TrekMovie.com
08/06 - Claire's new boyfriend can fly, and for one particular romantic getaway he picks her up and carries her to the Hollywood sign atop Mt. Lee. Source: Kristin on E!Online
07/18 - An upcoming episode will feature 60-year-old African-American Nana Dawson. Source: SpoilerFix BuddyTV Spoilers Chat
07/17 - We're hearing that episode four of Heroes this season may be set in New Orleans. Source: Kristin on E!Online