‘Doctor Who' Class Notes: Amy Pond, River Song, Fish Fingers and Custard River Song Directly based on The Time Traveler's Wife, River Song returns as Doctor Who's wife (to be) and partner in crime. She's another complexity during Matt Smith's tenure. She's a courageous, intellectual equal to the Doctor, more so than any of the Doctor's young companions. She's clever, popular and she's written to encounter the Doctor backwards in time, so fans expect her character to build up into a powerful story. Fans adore her, but this poses a problem for writers. "She's a tough character to deal with," Rotolo said. "She runs the risk of upstaging the Doctor. Obviously you want to avoid that when the show is called 'Doctor Who.'" We'll address that issue and more about the Matt Smith era in class next week.