Spoilers from Digital Spy
# Nathan Petrelli is apparently dead. We see him rushed to hospital, where resuscitation attempts fail. "There was nothing we could do," a doctor tells the family. I don't believe it.
# Looks like Elle (Kristen Bell) is going to be spending a bit of time sparring with Sylar this season.
# Angela Petrelli introduces us to "Level 5", a housing place for the most dangerous criminals in the world - rapists, arsonists, killers. Presumably this is where the band of Villains escape from.
# Matt Parkman is alone in the middle of a desert screaming for help.
# New Villain 'The Speedster' steals something from Hiro and quips, "Gotta run."
# Is Sylar in league with Angela Petrelli? In one short clip he is seen approaching her from behind and placing his hands on her shoulders.
# Linderman is back with a prophecy of doom. "The second coming is at hand," he warns.
# And, perhaps the most shocking tease of all: a big bald man, incarcerated in Level 5, shouts: "I'm not who you think I am. I'm Peter Petrelli..."
The third season of Heroes will play out on BBC Two and BBC Three (and BBC HD) from the end of September, with a delay of just eight days on the original US broadcast. The season will comprise two "volumes", each containing 13 and 12 episodes respectively.