Episode Description: Beware, spoilers! To read - hover over the text.
The viewer shows the story of two brothers Jacob and (Man in black), boys were born and raised on the island. Their mother, wygasa woman from the ship, which was wrecked in the storm. Another woman rescued a mother, two brothers killed after birth and raised her sons as his own. One of the brothers has the ability of communicating with the dead. The man in black speaks to his deceased natural mother and then trying to leave the island kills adoptive mother. For this act, Jack pushes his brother into the source, into the heart of the island that results in the creation of the smoke monster.