[1] Christopher has filed stories across North America, Europe, Asia and Australia, with most of his journalistic career focused on Western Canada, often reporting on criminal justice.

His investigation into alleged illegal activity by Calgary-based Talisman Energy was reported worldwide, and eventually forced the company to suspend its operations in Sudan.

He began his broadcasting career in 1965, working as a sports reader for a local radio station, CKNB, while he was attending high school in Campbellton.

Christopher returned to Canada in 1972, and has since pursued news assignments in the United States, Poland, Germany, Austria, England, Scotland, Wales, Nepal, and Nicaragua.

Throughout his career, Christopher has had exclusive interviews with many locally and nationally well-known criminals, including Michael White, Colin Thatcher, Wiebo Ludwig, Leo Teskey, Anton Rapati, and Karl Toft.

[3] In 1991 Christopher received a national award from the Canadian Association of Journalists for "outstanding investigative journalism", recognizing his work uncovering new details concerning a double homicide in Saskatchewan.

[1] In 2002 Christopher discovered that a Calgary-based oil company, Talisman Energy, had been accused of complicity in the rape, bombing, kidnapping, enslavement, and execution of local people while operating in South Sudan.

[7] In 2007 Christopher spoke on a panel to a group of international journalists in Toronto on the subject of how to respond when targeted by police search warrants.

In 2006 McNair successfully shipped himself out of prison, convinced a police officer searching for him that he was a roofer working in the area, and escaped to Canada.

Campbellton's local newspaper, The Tribune, covered their continuing correspondence in detail,[10] publishing Christopher's award-winning series of articles on McNair under the title "The Running Man".

[10] Christopher compiled his correspondence, conducted additional research on the story, and eventually produced a book on McNair, The Man Who Mailed Himself Out of Jail.