Border Security: Australia’s Front Line “Illicit Substance” S15E15 June 11 2025 on National Geographic

On Wednesday June 11 2025, National Geographic broadcasts Border Security: Australia’s Front Line!

Illicit Substance Season 15 Episode 15 Episode Summary

The upcoming episode of “Border Security: Australia’s Front Line,” titled “Illicit Substance,” promises to be an intense look into the challenges faced by border security officers. This episode will air on National Geographic and is set to showcase the critical role that these officers play in keeping Australia safe from illegal drugs.

In this episode, a man’s luggage raises suspicions when it tests positive for drugs. The discovery sets off a series of events that highlight the thorough processes in place at the border. Officers will be seen carefully investigating the situation, demonstrating their training and expertise in handling such cases. The tension builds as they work to uncover the truth behind the man’s luggage.

Additionally, a trained dog plays a significant role in this episode. The canine companion makes a remarkable find, further adding to the drama of the situation. The bond between the dog and its handler showcases the importance of teamwork in border security operations. Viewers can expect to see how these skilled officers and their canine partners work together to identify and intercept illicit substances.

“Illicit Substance” promises to provide an eye-opening look at the complexities of border security. With real-life stakes and the potential for danger, this episode is sure to keep audiences on the edge of their seats. Tune in to witness the dedication and hard work of those who protect Australia from illegal activities at its borders.

What Time is the “Illicit Substance” Episode On?

The Illicit Substance episode of Border Security: Australia’s Front Line will be broadcast on June 11 2025 on National Geographic at 9:00 PM at ET/PT.

Is the “Illicit Substance” Episode New?

The Illicit Substance episode of Border Security: Australia’s Front Line is all new!

Border Security: Australia’s Front Line Illicit Substance Cast & Stars

Main Cast

Illicit Substance Episode Videos & Previews

Watch Border Security: Australia’s Front Line Illicit Substance Online

Watch the show online

Border Security: Australia’s Front Line Series Information

Follow Australian Customs and Border Protection officers as they attempt to enforce the country's various quarantine, customs, immigration and finance laws.