'And That's What Really Hurts'

Joseph tries to convince the police and Vanessa that potassium killed Archie, as the medical drama continues. But Elliot loses confidence in Joseph's professionalism when he realises Joseph's shortcomings as a consultant.

Elsewhere, Judith uses a new approach to spreading the message of infection control as a way of building bridges with Chrissie, but ends up creating an even bigger rift.

Oliver, meanwhile, is desperate to complete an assessment but, when he sees Daisha needs a friend, he passes up his chance to finish it.