Sebastian Siegel

Robin gets on the VIP list of a hot new club and can get the others in for free, but Lily has decided she and Marshall need to be more grown-up so she throws a wine and cheese evening with her teaching colleagues instead. Marshall busts out of the bathroom window and goes to the party with his friends.

It's decision time for Jack and Kate as they find themselves at odds on which direction to take in order to save their companions. Elsewhere, John Locke further solidifies his position as leader of `The Others', and Juliet and Sawyer are scrutinised by the DHARMA Initiative.

Sawyer and Juliet deal with a dire medical situation, but Kate takes matters into her own hands and saves a controversial life; Kate’s years off the Island are revealed including why she left Aaron behind.

A scientist and conspiracy theorist, who believes two astronauts saw an alien spaceship during a shuttle flight, asks Walter to find the extraterrestrial vessel and expose an alleged cover-up - but the case takes a dangerous turn. Meanwhile, Timo and Willa struggle to accept their arranged marriage.