A mother's worst nightmare - her talented teenage son is stabbed to death during a night out to celebrate his birthday. Janine asks the team to pull out all the stops to find his killer, but is Richard really giving it his all?
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When an apparently well-loved family GP is shot dead and a fellow GP goes missing in mysterious circumstances, Janine and the team fear that all the surgery staff are at risk.
K Troop's preparations to fight overseas are interrupted by a vicious and fatal attack on an unpopular soldier. As events unfold, more deaths occur and the plot grows more mysterious.