Kaz: I-it's a thing mortals get...when they make deals with devils. You-you would have one from me...but-you-you have another one...
"Oh.."
Kaz: Did-did you...?
"They didn't look like a demon.."
Kaz's eyes widen
Kaz: No...no you-you didn't...
He holds a hand to his mouth
"What...?"
Kaz: You made a deal with another demon...Klaus did you give up your soul...?
"Nuh uh! They said I just make them cake!"
Kaz:...huh? Klaus...what did they look like...?
"He had red hair!"