With the main suspect due to be released and an alarming number of procedural blunders stacking up on the record, Captain Berthaud's team is now on the back foot. When Judge Roban transfers the case to the Crime Squad, Laure's reaction is surprising, but she remains doggedly determined to catch her killer.

Meanwhile, Gilou is in trouble. A victorious Josephine Karlsson finds no time to gloat, as shady past connections return to haunt her. Judge Roban realises the extent of his brother's involvement in the Villdieu bribery case.

With strong new evidence to back Captain Berthaud's theories, Judge Roban asks the CID team to become involved in the investigation again. But how will Laure deal with having to play second fiddle to work rival and lover Superintendent Bremont?

Police are out to substantiate a link between the leader of an international prostitution ring and their main murder suspect. Pierre goes above and beyond the call of duty to help his troubled young client, and Judge Roban's pupil Arnaud finds himself the target of blackmail.