He started as a summer-relief writer in the TV newsroom but soon rose to the position of duty editor.
In 1974, Scully was recruited as the senior field producer for Canada's latest TV network, Global.
[2] From 1990 to 1994, he held numerous positions with a number of news organizations such as The 5th Estate and CBC South Asia Bureau.
In 2022, Scully expressed his intent to seek assisted suicide services through MAiD after suffering from PTSD after his years of reporting in war-torn countries.
[4] Scully has won numerous journalism awards, such as "Gemini Nomination: Best Documentary" and "Gold Medal, Houston International Film Festival: Best Coverage of a Continuing News Story.