Guillaume Dabinpons

Kate learns that someone knows the secret of Aaron's parentage; the dramatic shifts through time endanger the remaining island survivors.

Sarah confronts Brody. After talking to him, she realises she no longer wants him to be part of her or Nora's life. Meanwhile, Olivia struggles with the addition of baby Daniel to the family.

Locke shoulders the burden of ending the island's increasingly violent movements through time; Ben is stymied in his efforts to reunite the Oceanic 6 and bring them back to the island.