Josh rescues two children whose father may have attempted to kill them.

Grace attempts to negotiate love-struck teenagers threatening suicide, revealing her inexperience.

Stella finds herself in danger when she is called to a sports stadium with Lawson and Michael, where a heavily armed gunman demands to meet with a senior officer.

A convict seizes his opportunity to escape from a prison van and shoots a uniformed officer - before taking a member of the squad dispatched to hunt him down hostage.

An armed robbery at a suburban pub takes a dramatic turn for the worse when hostages are taken, and the team is pushed to its limits to resolve the situation.

Animal rights activists called Freedom From Torture attack a research laboratory, forcing Grace, Josh and Dom to try to restore law and order - putting their lives at risk in the process.