Family Liaison Officer Lisa Armstrong becomes a little too emotionally involved with a case (to the point where she might compromise it) concerning a pair of missing Morecambe twins to whose distraught parents she is assigned.

As World War I rages on, Dr. Henry Guthrie takes over a British choral society that's lost most of its men to the army. The community soon discovers that the best response to the chaos of war is to make beautiful music together.

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.

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.

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.