Back to School - S31.E18

A scuffle at an illegal rave leads an over-enthusiastic sergeant causing serious head injuries to a 19-year-old man and later planting drugs in his belongings to corroborate his claim that he had been assaulted twice by his quarry. Jacob is dubious about the sergeant's story and takes a police constable to one side in an attempt to persuade her not be an accomplice to her superior's crooked ways. Elsewhere, Elle's career is on the line as Connie goes on the warpath, David struggles to connect with his son, and Cal suspects Alicia's infidelity