"Without Remorse" by Tom Clancy. The back story of John Clark, who might be my favorite character of the Jack Ryan universe. This book goes beyond being a spy/military novel. It let's readers understand how John Clark became who he is & can be very emotional. Love. It.
Another great Canadian writer. He received an Honourary PhD at my daughter's graduation, was a pleasure to listen to. For my American friends, the title is "Someone Knows my Name" as the title was offensive in the US.