 The episode also features the death of River Song (Alex Kingston) an archaeologist who has a close relationship with the Doctor, but because of the non-linearity of this partnership, the Doctor in the episode has only just met River.The Tenth Doctor, River, Strackman Lux, and the remainder of their team flee the microscopic Vashta Nerada on a planet-sized Library.Other team members are consumed by the Vashta Nerada, their space suits animated by the swarms.