Lost!

[Ghoulish Delight]

Originally Posted by BarTopDancer

In that same scene there is speculation that there is a woman in the background, behind Sun

Probably Claire, as she was with spectre Christian before (see above).

Originally Posted by BarTopDancer

I really want to know about the Others. Why are they considered hostile? Where did they come from? Why did Richard want them killed?

Richard IS an other, he doesn't want them killed. They're considered hostile because they want to kill the people in Dharma because they feel it's "their" island.