Best Medicine has Abigail Spencer caught in a fictional love triangle between Josh Charles and Josh Segarra - but how will it continue to play out on screen? While speaking exclusively with Us Weekly during a set visit, Spencer, 44, discussed how Best Medicine differs from Doc Martin, which is the inspiration for the Fox show. "So much of that is in the calibrating of the writing. I think [executive producer] Liz Tuccillo is doing a great job. You will see differences from the original Doc Martin.