Taraji P. Henson and the 'Empire' producers on keeping Cookie fresh and guest star Mariah Carey in Season 3

If anyone could give Cookie Lyon a run for her money, it’s Mariah Carey.

Following on the heels of the announcement that the pop superstar would guest on the upcoming third season of “Empire,” star Taraji P. Henson and producers Ilene Chaiken and Sanaa Hamri fielded questions about Carey’s recent...