Primeval - Season 4 Episode 7 Surprising Visit

The team head to an old prison, where they discover an Anomaly that won't lock and is producing satellite Anomalies throughout the prison, which in turn makes it even harder for the team to track a Terror Bird loose in the prison. At the same time, Danny returns from the past with a warning for the team, Ethan's true identity is discovered, Emily is torn between Matt and the chance to return to her home, Matt reveals his secret, and Connor makes a terrible discovery.