S07E21: Waterloo Road is infiltrated by a gang

It's the first day of term at Waterloo Road and Sian, who is covering for Michael, has her work cut out when the school is infiltrated by a local gang - the DSC.

Tariq's efforts to turn over a new leaf are challenged by the arrival of new pupil Mason, who is fresh out of youth detention centre and who soon makes it clear that he expects Tariq to join the DSC. The gang set their sights on attacking Finn and the situation escalates when Mason secures a knife.

Meanwhile, the spotlight falls on Jez as the prime suspect to Michael's hit and run, but with his marriage back on track, he's concerned that Sian will find out he was with Janeece.

Elsewhere, Chalky is backing up Linda's story, but when his suspicions are aroused, the net begins to close in on her.

Also today, Grantly makes a new enemy - dinnerlady Maggie - when he criticises her culinary efforts.