ST. LOUIS (KSDK) - You've probably had to deal with one or two phone calls from a debt collector, calling about a debt that you might not even remember, or even owe.

It's called "zombie debt," and Thomas Nitzsche from Clearpoint Credit Counseling Solutions joined First @ 4 Thursday because he's been getting calls from consumers asking about this.

Click the video player above to learn why it's called zombie debt, and the statute of limitations on debt in Missouri and Illinois.