A race for survival Zero Visibility by Sharon Dunn Merci Carson doesn't know why she's a target, but she knows she owes her life to EMT Nathan McCormick. Protecting Merci from the desperate men chasing her in the middle of a blizzard is the biggest challenge Nathan's ever faced. But failure is not an option. Merci's bravery and kindness touch his guarded heart. Together, they could have a future--if they can solve the mystery in time...