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When a man reports his employers for pollution, he puts his whole family at risk.

When a dead badger is left in McCabe's garden, he realizes someone has a grudge against him--but it soon becomes clear it's not him in danger when his daughter Wilf is abducted.

An e-coli outbreak leads to McCabe and Cassidy tracking a gang of sheep rustlers; meanwhile, a young gypsy boy arrives at Steph's with an injured horse, but his story doesn't add up.

McCabe and Claire find evidence of a cockfight on the moors where a young girl has collapsed. Cassidy helps Julia with an infestation of bats, while McCabe and Cassidy investigate burglaries that lead them to the cockfighting ring.

DC McCabe faces one of his biggest challenges yet when hysteria rises in the local community after wild animals are released from a private zoo.

Cassidy has his own reasons for seeing an escaped violent criminal recaptured.

McCabe's seal and bird-watching holiday in a Northumbrian fishing village is cut short when a local fisherman is found drowned.