Two decades after they graduate, dark secrets, jealousies, and long-buried issues of resentment arise with a group of former classmates.
| Actor | Role |
|---|---|
 Peter DavisonDC Davies | DC Davies |
 Sean HughesMod | Mod |
 Rob SpendloveDI Aspinall | DI Aspinall |
 Charles De'AthPimlott | Pimlott |
 Billy GeraghtyBarrett | Barrett |
 Emma AmosJulie Davies | Julie Davies |
 Vineeta RishiWPC Kapoor | WPC Kapoor |
 Steve PembertonEdward Netherton | Edward Netherton |
 Stephen TompkinsonSimon Dabney | Simon Dabney |
 Niamh CusackGill | Gill |
 Gina BellmanCaroline | Caroline |
 Peter SullivanNick Roberts | Nick Roberts |
 Gregory FinneganBeamish | Beamish |
| RRachel LeskovacPrincess | Princess |
 Joe Van MoylandMarcus | Marcus |
 David CalderDenny Flemyng | Denny Flemyng |
 Petra LetangKayleigh | Kayleigh |
| SSarah OzekeLeanne | Leanne |
 Jim SturgessRyan | Ryan |
 Catherine SigginsLudmilla | Ludmilla |
 Ken CampbellZero | Zero |
 Angus KennedyLandlord | Landlord |
 James MarcusMoody | Moody |