It’s Oliver’s first day on AAU and he thinks he knows it all – much to Bernie’s annoyance.

He tries to go over her head while treating a patient, but he soon realises that this sort of behaviour will not win him any friends.

Meanwhile, Mo has her hands full on Darwin. Trixie, the pregnant mum of three with heart problems, needs urgent surgery – but that will mean delivering her baby early – and Derwood’s mum Birdie has been admitted with breathlessness and chest pains.