Thomas Caine has a dubious past, reads like assassinations for what he thought was the right reason. He has a couple of women he likes/loves and is doing what he can to keep them out of trouble by staying away.
This is the first book I read about him, and here he has to survive in the cold ,icy part of Russia, with various well trained gangsters after him.
An old cruel criminal gang lord wanted to punish him for the death of his son, punishing him by giving him a small head start before the hired gangsters hunted him down ,weaponless and unsuitably badly dressed for the cold surroundings.
Caine seemed almost McGyver resourceful and also lucked out in meeting an old but resourceful woman before the final battle. That was where he also showed a certain sense of respect for one of his adversaries .