NCIS: Sydney

When a murder-accused American sailor is shot dead, the NCIS team investigates if an obsessed superfan from a popular true-crime podcast took justice into their own hands, blending true-crime obsession with high-stakes investigation in Sydney. 

The team races to an Antarctica research base to investigate why a climate scientist killed a colleague on Polar Night Eve – and make it out before their plane engine freezes and they're trapped in darkness for six months.

Mackey is enlisted to run a secret solo investigation into the disappearance of her boss' son and his girlfriend. But when a van turns up with the girlfriend's body inside, it's all hands on deck to locate the boss' son – who is either in grave danger or a killer.

The team investigates the suspicious death of a U.S. Naval officer who'd just learned he was going to be a father, leading to the discovery of a scandalous secret.