I sold a vehicle which was secured by a lien.  The purchaser made payment DIRECTLY to the lien holder via what turned out to be a counterfeit cashier's check.  Approximately a week later, I was sent a paid in full document and lien release from the lienholder which I forwarded to the purchaser.  Approximately a week after that, I noticed that the payment on the loan had been reversed.  The lien holder is now coming back after me for payment.