Episode 2, Series 4

Its Melissa Ryan's first day in her new job as Head of Extended Services and as Rachel's sister she has a lot to prove - Rachel is relying on her to make the initiative work. No one knows about the family connection apart from Rachel, Melissa and Melissa's son, Philip, who's told to keep quiet until they're all more settled. Outside, people are arriving for Melissa's first class, amongst them Bolton's mum, Candice and Donte's dad, Clarence. Donte is hugely embarrassed when his dad turns up at the school in a shirt and tie and immediately takes a shine to Rose. Still, at least Donte can be pleased about the fact that Chlo's Cutz seems to be doing brisk business. Between that and the dodgy DVDs he's selling from the back of the van, he and Chlo are quids in.

Still not giving away much more

Watch it here on BBC iPlayer http://www.bbc.co.uk/iplayer/episode/b00gq56m/Waterloo_Road_Series_4_Episode_2/

Episode 1, Series 4

It's the start of a new term at Waterloo Road and following the fire that nearly destroyed the school. Rachel, who has suffered burns and mental scarring, is keen to bury herself in work and get the school back on track. She outlines her new initiatives: the implementation of a full extended services programme for the community and a no exclusion policy for pupils. This is the year Waterloo Road serves everyone. Rachel's commitment is put to the test before lessons have even begun when a cab pulls up and out roll the Kelly 'family from hell'. Mum Rose has five kids; Marley who's keen to keep his head down and make a go of the fresh start, Sambuca, Denzil the 11 year old with learning difficulties and little toddler Prince. But it is 15 year old Earl who is the borderline psychopath intent on making his mark. Unbeknownst to all, he has a gun in his rucksack and Bolton and Paul make an early enemy of him when they jostle him in the corridor.

I won't give away much too more about the plot.

Follow this link to watch it on BBC iPlayer http://www.bbc.co.uk/iplayer/episode/b00gm1yv/Waterloo_Road_Series_4_Episode_1/