If you sell the story, your missus will find out. Your missus will tell her best mate. Her best mate will tell her boyfriend. The boyfriend will fret that he may lose the chance to appear on the programme. He will be pi$$ed off with his girlfriend and jack her. She will blame your missus and have nothing to do with her. Your missus will blame you for breaking up the friendship. You will end up getting divorced. The money that you got from the Scum will end up in the lawyers pockets.
It's safer if the story is divulged by somebody you don't know. You don't know me, so PM me with the details and I'll save you a lot of grief.