How Soon Is Now

'''How Soon is Now? 'is the 13th episode of the 22nd series of Casualty''. It was preceded by Strangers When We Met and followed by Inheretance. This episode saw the arrival of Big Mac.

Synopsis
There is a fire in Louis's school. Greg is a hero when he risks his life to save children trapped in the blaze. Charlie is worried when Louis is among the children unaccounted for.