'One Extreme to Another: Part I'

It’s the first day in Holby City ED for new F2 doctors Toby De Silva and Ruth Winters. They are shown around the department by a rather disillusioned Charlie.

While Ruth oozes confidence, poor Toby manages to screw up nearly every job he’s given - including letting overdose victim Sunny go without treatment.

A despairing Maggie sends Toby out with Dixie in the RRV.

As they drive past a coach parked outside a row of shops there’s an almighty explosion...

The next episode of Casualty airs tomorrow night (Sunday, September 9) on BBC One at 8pm.