Linda Colby was a DEA agent and friend of James "Sonny" Crockett. She married fellow agent Chuck Colby and has a son, Brian Colby. Chuck was on duty when an unnamed suspect shot him, leaving him a paraplegic and confined to a wheelchair, ending his DEA career. Later, her son Brian developed a kidney condition that would end up requiring a transplant. While Chuck kept a positive attitude, despite his and Brian's conditions, their mounting medical expenses, and Chuck's insisting to Linda for "no quick fixes", Linda was very concerned, and went "rogue" to get the money needed for Brian's treatments and a potential transplant, teaming with drug dealer Esteban Montoya and a group of men dressed as DEA agents to undertake false raids to confiscate drug money, part of which was given to Montoya,