Contents Present at a hanging - A cold greeting - A wireless message - An arrest - A man with two lives - Three and two are one - A baffled ambuscade - Two military executions - The Isle of Pines - A fruitless assignment - A vine on a house - At old man Eckert's - The Spook House - The other lodgers - The thing at Nolan - The difficulty of crossing a field - An unfinished race - Charles Ashmore's trail - Science to the front.