Then he crouched, ran low behind a big drift, and gained the side of a building next to the Willets Hotel.

He was close to the two riders, and he grinned maliciously when he saw that one of them was a woman.
He heard Lawler knock on the rear door of the hotel; and he crouched in the shadow of the building until Lawler and the woman entered.

But just before the two entered, Singleton caught sight of the woman's face as she turned toward him for an instant and the dull light shone upon her.
He watched until Lawler came out again and rode away; and from behind another building on the other side of the street he saw Lawler going directly south, which direction would take him to Number One Circle L line camp.
Then Singleton mounted his horse and followed the trail taken by Lawler.
By the time Singleton struck Lawler's trail, Lawler was out of sight beyond a low ridge, and Singleton leisurely examined the tracks in the snow.
He discovered that two sets of tracks led in the direction Lawler was taking.

He followed them for several miles, until there seemed to be no doubt that Della had been with Lawler at the line camp; then he grinned and wheeled his horse toward the Two Diamond.
* * * * * Gary Warden was also following the two sets of tracks that led northward.

He had come upon them accidentally, while riding with one of his men slightly in advance of the others as they went toward Willets, where Warden intended to take the bodies of Link and Givens.