Scottish bandit Alistair McPherson and his brother Alban known as the Highlanders throughout the Rocky Mountain frontier kidnapped a young 10-year-old girl named Connor O'Brien for ransom from Alma, Colorado. Conner's wealthy grandfather Finn O'Brien on her father's side owned and operated the London and Mosquito gold mines and was more than willing to pay the $100,000 ransom. What the Highlanders did not know was that Conner's grandfather on her mother's side was the famous Federal Marshal Eric Robert.