This has many elements that make it a good Alistair MacLean thriller. A plane crash, hostile terrain, a medical man for a protagonist, a closed circle of suspects. I was shivering with cold just reading it. Most of the characters had a chance to play a key role in the story, even the women (as much as is possible in these older thrillers). It‘s not top of my list for favourite MacLeans, but it‘s definitely just outside the podium.