Locke comes face to face with the ‘monster’ yet we don’t get an explanation about what he saw.
What exactly are the flashbacks and how do they actually fit in. Are they there simply to fill in the background information for each character or are they playing a much bigger part in the story. For example, we see a flashback of Locke which mentions Helen, when we return from the flashback Kate is trying to get Locke’s attention and he calls her Helen. Is it possible that they are also memories that are being played out in the mind of the character featured, or something else entirely.