Strong Medicine - Season 2 Episode 4 History Hope in every heartbeat.
Overview: Lu travels to Puerto Rico, where her beloved grandmother urgently needs a bone-marrow transplant to survive. As the headstrong doctor copes with this life-or-death situation, she flashes back to her days as a resident, recalling her first meeting with Peter and Lana. Mary J. Blige guest stars as a moody blues singer named Simone.