Crimson Mountain (Musaicum Romance Classics). Grace Livingston Hill

When Laurel Sheridan, a school teacher, moves to the little town of Carrollton she has a tough time adjusting to the new environment. Finally she finds a friend after meeting a young soldier Phil Pilgrim whose family owns a munitions plant. Suddenly, Laurel's life gets endangered after she overhears a plot to blow up the new munitions plant. The only person she can trust in the town is Phil and she counts on his help badly…