Sid returns from holiday to find his recent PR exercise has horribly backfired. Zara and Daniel face their worst nightmare when they discover Joe has gone missing from school. Heston discovers a patient with Parkinson's disease is making impulsive life choices. Could it be a side effect of what he prescribed?

Al is silenced when Gwen's harsh words cut him to the core. Tom is left frustrated when his attempt to get Zara to change her mind turns out to be a hopeless stab in the dark. Emma exposes a lie and faces a dilemma. Should she breach patient confidentiality to stop someone having a vasectomy for the wrong reason?