Doctor Who: Series 5

This is the first series to feature Matt Smith as the eleventh incarnation of the Doctor. Karen Gillan is introduced as the Doctor's new companion, Amy Pond. Alex Kingston returns as River Song, a mysterious woman from the Doctor's future who summons him twice. The main story arc concerns a pattern of cracks in the universe that are sometimes unnoticed by the characters. It is discovered that the cracks can erase things from existence.