The Others in the Temple are on high alert at the approach of the Man in Black. Jack and Hurley follow the instructions of Jacob to a lighthouse, in order to assist with the approach of an unknown visitor. In the afterlife timeline Jack is shown to have a strained relationship with his son which he wants to heal.

original airdate: February 23, 2010

flash-Sideways: Jack Shephard

music--"Impromptu No. 4 In C-Sharp Minor, Op. 66 "Fantaisie-Impromptu" by Claudio Arrau