Harold is suffering from a terrifying new disease that is turning him into a zombie. As his condition deteriorates, he and his friendly care worker end up on the run from a group of violent vigilantes.
Gemma agrees to look after her neighbours dog whilst they're away only to find it dead on the first day. Sparring between three versions of her own consciousness she must decide what to do.
After a family tragedy is narrowly averted, a corrupt police detective undergoes a painful moral awakening and decides to put right twenty years of wrongdoing but satisfying her newfound conscience won't be straightforward.
