Jon Frost is an experienced customs officer of twenty-two years standing. He has served as a HM Customs Preventive Officer in London airports, an Operational Intelligence Specialist, an Investigation/Surveillance Specialist (Drugs), an Anti-Corruption Manager (Overseas) and National Intelligence Co-ordinator, and an Investigation Specialist for SOCA (Serious organised Crime Agency).

He is also experienced in Army trained covert surveillance (CROPS) for the long-term observation of criminal gangs and operations. He is also an Anti Fraud squad senior officer. He trained and managed the covert investigation teams for HMRC that were responsible for the two single largest seizures of attempted importations of both cocaine and heroin. He was the case officer on HMRC's very first DNA- based conviction.

He has managed the intelligence between two leading UK law enforcement agencies and overseas agencies for SOCA, creating data intel up to top security level.

The first real-life story behind HM Customs officer work.

The first real-life story behind HM Customs officer work.

In more than twenty years, Jon Frost has worked with the mad, the bad, the brave, the stupid, the spectacular and the heroic.

In his time as a uniformed officer Jon seized presidential aircraft, a working tank, cars, lorries, boats and coffins; and uncovered wild animals, killer snakes, bush meat, animal porn, poisonous vodka, dodgy medicine, bootleg prescriptions, pirated pills, toxic alcohol, firearms, side-arms, swords, explosives, stolen gold, dirty money, blood diamonds, child pornography and every drug known to man and a few as yet unknown ones. And the dead? He searched them too.

When you've confiscated everything from a suitcase full human hair to a live monkey hidden in the lining of someone's overcoat, you know you can never return to a normal line of work.

But then Jon went into undercover customs work, and things became really interesting . . .