The mysterious past of Kate Austen is partially disclosed through flashbacks, when she was betrayed in Australia and delivered to Marshal Edward Mars (Fredric Lane). However, what she did to be chased is not presented. Meanwhile, Michael Dawson (Harold Perrineau) is preoccupied with the friendship of his son Walt Lloyd (Malcolm David Kelley) and the weird John Locke (Terry O'Quinn) and promises to find his dog Vincent to get his attention.
"Tabula Rasa" is a good episode of "Lost", where the intriguing past of Kate is partially disclosed. The story is more dramatic than the pilot, and the lead characters are being very well developed. My vote is eight.
Title (Brazil): "Tabula Rasa"
Note: On 18 March 2013, I saw this episode again.