Lost - The Complete Fourth Season

After Oceanic Air flight 815 tore apart in mid-air and crashed on a Pacific island, it s survivors were forced to find inner strength they never knew they had in order to survive. But they discovered that the island hold many secrets, including a mysterious smoke monster, polar bears, a strange French woman and another group of island residents known as The Others. The survivors have also found signs of those who came to the island before them, including a 19th century sailing ship called The Black Rock, the remains of an ancient statue, as well as bunkers belonging to the Dharma Initiative a group of scientific researchers who inhabited the island in the recent past.

Stills from Lost : The Complete Fourth Season (Click for larger image)