They paid $200 for the desk and inside found a treasure, $98,000.
Rabbi Noah Muroff says he might not have noticed the hidden cash, but the desk wouldn't fit through the door so he and his wife took it apart.
Behind the drawers they found a bag filled with the money.
They were stunned but they knew what they had to do.
The couple called the original owner and returned the cash.
She had hidden her inheritance in the desk, and forgotten where she put the money.