So, Kaito's "cryptic" message to Hiro about the pure blood who is the "light" that can safeguard against the darkness was pretty much answered in tonights episode, both through content and title. Adam Monroe was the only person to die tonight, and apparently many of you were right about him being the pure blood. He was the light. Hopefully with time travel and healing touch/regeneration, this is not the last we see of old Takezo. I do have faith in the writers that many people do not, regarding continuuity/plot holes. I think they kind of outlined x number of years of the story and are sticking to that as they go along.

This actually makes a bit of sense. Hence why Angela referred to Adam as "The Key" as well...

Kinda curious as to what exactly adam could have done with his super healing to stop arthur though...

actually i think the light is Arthur. He gives off light as he steals powers, and Adam "Died of the Light" so to speak.

think about it. If powers ever got out, "The Light" could take them away again. either "The Light" is Arthur himself, or Arthur's ring. I saw that it was pretty center screen in this ep.

It does appear that Adam is the "light" but it also seems we're not done dealing with him. Angela saw Adam in her dream. If Adam is the Light and he's done-for, the world's in pretty dire straights. Angela and Kaito both said that the Light was the world's last hope (Kaito explicitly, Angela more cryptically).

As I said before, Arthur's ability to strip one of thier ability is the light, and the last hope of humanity if the formula became mainstream.

Seemed to me like Adam was "The Key" to bringing Arthur out of...whatever he was in. Although I hope he will come back somehow, especially with them going on about how he can't die. Not sure about the other things, but I'm mildly disappointed that his 'power' isn't inherent. I thought it would be cool if he was just plain immortal, and you couldn't 'take it' from him.

But if angela is on the opposite side of arthur, why would she mean the key to healing arthur when she said that?

Unless she's secretly working with her husband, which I still haven't completely ruled out yet, though it's far from being what I actually think is going on.

I believe that the light is metaphorical.
Light is often used to symbolize hope.
Light at the end of the tunnel, coming out of the darkness into the light, etc.
With Peter's powers gone, Angela in a coma, Daphne "rejecting" Matt, Claire "rejecting" HRG, and Adam dead, it could indeed seem as though "the light" (hope) has gone out, or died.
The "Villians" at this point seem to be on top.

These are indeed "dark" times...

I don't think Kaito was speaking in metaphors when he told Hiro that the only hope would be the Light. I, and almost everyone else on this board, thought he meant a particular person.

Adam is dead.
i hope he stays dead.
this way we get that real sense of danger and fear from arthur
that hes someone to not ****** with.

- Angelas newest dream she got paralyzed from was changed and Adam wasn't involved in there anymore.
That showed that the course of events had changed already.

- Since we know now Arthurs power, it seems that he indeed was in Angelas dream and the one that stopped her and not Maury.

- Adam was as Angela stated "The Key" (probably represented by the key at the vault he wanted to take when Hiro appeared at the end of season 2) that probably would had helped against the formula and that is something Arthur couldn't have around because it would interfere his plans. :/

Do not go gentle into that good night,
Old age should burn and rave at close of day;
Rage, rage against the dying of the light.

Though wise men at their end know dark is right,
Because their words had forked no lightning they
Do not go gentle into that good night.

Good men, the last wave by, crying how bright
Their frail deeds might have danced in a green bay,
Rage, rage against the dying of the light.

Wild men who caught and sang the sun in flight,
And learn, too late, they grieved it on its way,
Do not go gentle into that good night.

Grave men, near death, who see with blinding sight
Blind eyes could blaze like meteors and be gay,
Rage, rage against the dying of the light.

And you, my father, there on the sad height,
Curse, bless me now with your fierce tears, I pray.
Do not go gentle into that good night.
Rage, rage against the dying of the light.