This is an 18 card set.
Inspector Mills has a problem as most of his station has gone down with Flu! Help arrives in the form of 3 recruits from Police School, Constable Potter, Constable Benson and Constable Constable! Sgt Wilkins knows his job is on the line if these 3 fail...and they do, constantly. Only a major arrest can save them all! 
The story of each character is told on the back of each card.