Raza is arrested and coerced into working as a counterterrorism informant.
Budget cuts and student anxiety are amongst the challenges facing Castle's head teacher.
Holly faces fresh challenges when she meets a clique of enigmatic boys.
Kurupt FM has been raided, and the boys resort to desperate measures to stay on the air.
Following 18-year-old Billy as he returns to racing after the amputation of his legs.
Marcus sets a skills test that could catch the chefs off guard.
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