Achilles Heel
An Achilles heel is "a weak point in a person or system that can result in its failure".
Contents
Episodes
1.01 Pilot
Dean congratulates Sam for finding Constance Welch's weak spot.
Dean: You found her weak spot. Nice work, Sammy.
3.16 No Rest for the Wicked
Dean tells Sam they are each other's weak spot and should stop sacrificing everything for each other.
Dean: Sammy, all I'm saying is that you're my weak spot. You are. And I'm yours.
5.04 The End
Dean tells Sam they are each other's weak spot but should stick together anyway.
Dean: The point is... Maybe we are each other's Achilles heel. Maybe they'll find a way to use us against each other, I don't know. I just know we're all we've got. More than that. We keep each other human.
6.10 Caged Heat
Dean tells Samuel Campbell that their weak spot is family.
Dean: I’m asking you to learn from our mistakes! Doing this, this is how the bad guy gets us every time. It’s our Achilles' heel. Apparently it runs in the family.
6.06 You Can't Handle the Truth
Sam tells Dean Veritas is vulnerable to dogs.
Sam: Well, dogs are her Achilles heel.
Dean: Naturally.
11.15 Beyond the Mat
Duke severs one of Shawn Harley’s Achilles tendons.
Duke: You’re talented, Shawn. But the human body it’s just so fragile. One injury, one wrong step... Like, say, if somebody severed your Achilles tendon. Poof... You’re done.
15.08 Our Father, Who Aren't in Heaven
After having used the idiom twice before and heard Sam use it in 6.06 You Can't Handle the Truth, Dean suddenly forgets what "Achilles heel" means.
Sam: So, he has an Achilles heel.
Dean: Well, I'm saying he has a weak spot.
Sam: Yeah, that's- that's...
