Suddenly Slim shifted his plans. He knew a bloodless but not altogether painless way to capture the rider. Placing two fingers between his lips, he sent a shrill, penetrating whistle ringing down the valley.

Lightning stopped suddenly, poised like a statue. Again the sharp whistle came from Slim’s lips while Chuck watched in open-mouthed astonishment.

Slim Evans and his Horse Lightning — Part 21

Lightning whirled into action. The big sorrel left the ground in a wild, twisting buck that caught her rider unawares. Lightning almost swapped ends and came down in a rocking, jarring crash that sent the unknown rider sprawling through the air to land with a thud at one side of the trail.

Slim Evans and his Horse Lightning — Part 21

Then the sorrel raced toward Slim, whinnying in sheer delight at discovering her master again.

Slim Evans and his Horse Lightning — Part 21

Chuck ran down the trail to the side of the fallen rider while Slim swung onto Lightning. The sorrel fairly danced with pleasure over the reunion and Slim reached down and stroked the beautiful mane with gentle hands.

“Gosh, Lightning, old girl, it’s good to see you again. Darn me! I thought last night it was all over for us when I heard those bushwhackers riding away. From now on no one rides you but me. Understand?”

Lightning threw up her head in a quick, angry manner that indicated anyone except Slim would have a hard time mounting her.

From down the trail came a sharp cry from Chuck.

“Hey, Slim. Come here and meet your horse thief.”

The Flying Arrow cowboy swung Lightning about and trotted down the trail. Chuck was bending over the fallen man, who was now showing some signs of a returning interest in life.

“Think you can recognize him?” asked Chuck as Slim slipped out of the saddle.

“Why it’s old Bill Needham!” exclaimed Slim. “What under the sun could he have been doing on Lightning?”

Old Bill, tall and powerful of frame, a typical cattleman of the old school, managed to raise his bruised body upon one elbow as he squinted angrily at the two cowboys looking down at him.

“What’s the idea of pulling a stunt like this on me?” he demanded. Then, recognizing Slim as the mists cleared from his ancient eyes, he added. “My gosh, Slim. I was just riding up trail looking for you when that horse of yours set off a stick of dynamite under my saddle. How did it all happen?”