On April 17, 2023, Air Canada Flight 881 departed Zurich on time, for a scheduled arrival at Toronto’s Pearson International Airport at four P.M. Eastern Standard Time.

This was no ordinary flight. In addition to the 300-plus passengers on board, the Boeing 777 was carrying precious cargo in the form of 6,600 gold bars, worth approximately $15 million at the time (a figure that has since nearly tripled, with the increase in the price of gold, surpassing $40 million).