Episode 4.5 (Primeval)

Connor, Abby, and Matt are sent to a coastal village, where they discover that a farmer and her son are concealing a labyrinthodont, which has been attacking the local cattle and has killed a tourist. After it kills the two villainous farmers, Connor and Abby then force it back through the anomaly, while Matt follows the tracker Emily carried to a cemetery where Ethan has taken her and left her bound and gagged inside a coffin. Matt rescues Emily, but Ethan escapes. Gideon (Anton Lesser) warns Matt that Ethan presents a terrible danger to humanity, much like Helen Cutter did.