Chapter two foreword states that on orders from Marloff, Beck prepares to ambush Don and Kay who had left the Settlers to hunt for food. Actually they are looking for a safe place to cross the frozen river.
In Chapter 11 The Highway Patrol is called on to block the roads. There is no Highway Patrol in the Yukon as shown. The Royal Canadian Mounted Police are the only ones that could have done a road block in Canada.
Because edited film footage that is used from other movies, the amount of dogs pulling dog sleds changes constantly throughout the movie. Sometimes a sled will have seven dogs pulling and it changes to as many as thirteen dogs.
In Chapter 6. The Boat Trap, there are five men in the boat. Two men are shot and fall out of the boat. Only Beck and Reed are left. One man has disappeared from the boat.