If you spare me, I'll tell you.
Who: Sab Than
Source: John Carter (2012)
Note: John Carter has just defeated Sab Than in a duel and is demanding him to tell him about the Therns. However, as soon as Sab Than says this line, Matai Shang, the leader of the Therns, suddenly kills Sab Than by sending in a large, blue, webbed material to cover Sab Than's head, suffocating him to death.