When Klaus is in pain from the white oak stake, he yells at Caroline Forbes to help him stating, "I saved your life... twice!" He has actually saved her life four times: 1) he healed her after Tyler Lockwood bit her in Our Town (2012); 2) when she escaped from vampire Alaric Saltzman in Before Sunset (2012); 3) he rescued her from the van going to Pastor Young's farm in Growing Pains (2012); 4) he healed her after he bit her to spite Tyler in Into the Wild (2013).