Former NFL player Buster Barnett's mistress kidnapped his wife, Sandra, this week and shot her to death before turning the gun on herself, according to police. Sandra Barnett, 49, was kidnapped from her home in Ellenwood, Ga. on Wednesday by Lisa Brown, a woman said to be Buster’s mistress of several years. “Sandra was actually on the telephone with a friend when Lisa showed up at the front door,” said Clayton County Police Capt. Richard Gandee. “Lisa Brown was driving a vehicle owned by Buster.” Police spotted the Dodge Durango on Thursday and chased it into Alabama, where it stopped suddenly. Police say Brown shot Barnett then turned the gun on herself.