The second series of the British science fiction programme Primeval began on 12 January 2008 and concluded on 23 February 2008 after airing seven episodes. Primeval follows a team of scientists tasked with investigating the appearance of temporal anomalies across the United Kingdom through which prehistoric and futuristic creatures enter the present. Most of the main cast from the first series returned for the second; the cast was also expanded with the additions of characters played by Karl Theobald and Naomi Bentley.