Needs review
Source: Traps And Treachery 1

Description: You can make a rapid, additional attack as a follow up to a successful sneak attack.

Prerequisites: Base Attack Bonus +2, Sneak Attack

If you deal damage to a creature with a sneak attack, you get an immediate extra melee attack against that same creature. The extra attack is at the same bonus and with the same weapon as the sneak attack. The damage bonus for the sneak attack does not apply to the extra attack. You can use this ability once per round.