Farther down the river in an open s.p.a.ce, the forms of two struggling men were silhouetted in the moonlight.

"Oh, Jerry," Penny cried, "they're fighting!"

"And to the death," added Jerry grimly. "Come on, before it's too late!"

CHAPTER 21 _ELLIS SAAL'S CUSTOMER_

Penny followed the reporter, quickly overtaking him. Their pounding footsteps were heard by the two men who abruptly ceased their desperate struggles. Observing the pair, they turned and fled, one toward the river, the other toward the road.

"Well, we broke that up in a hurry!" exclaimed Jerry. "Wonder what made them run?"

"They must have been afraid we would recognize them," answered Penny.

"Didn't you think that one man looked like Peter Fenestra?"

"I never have seen him to my knowledge. He was the fellow who ran along the river?"

"No, the other. Fenestra's farmhouse is across the fields." Penny pointed toward a light shining dimly from a window.

"They've both disappeared now," Jerry commented, moving to the river bank. "Wonder how the row started anyway?"

"Fenestra has been threatened," revealed Penny. "Yesterday Anchor Joe left a drawing of an octopus on his doorstep."

"What was the idea?"

"It must have been intended as a warning of some sort. Anchor Joe, and other men, too, keep watch of the house."

"How did you learn that, Penny?"

"I've made observations. Besides, Tillie Fellows, who worked there, told me what she had seen. Fenestra is afraid for his life."

"Maybe it was Anchor Joe who attacked him tonight."

"It may have been. I wish we could have seen those men at close range."

Penny walked on to the clearing where the pair had fought. Gra.s.s had been beaten down over a large area, indicating that the struggle had not been a brief one. A shiny object gleamed in the moonlight. Penny picked it up, then called softly to Jerry who had remained by the river bank.

"What is it?" he asked, coming quickly to her side.

"I've found a key, Jerry! It was lying here on the ground."

"One of the men must have lost it from his pocket."

"This may have been what they were fighting over, Jerry!"

"What makes you think that?"

"Doesn't the key look as if it belonged to a padlock?"

"Yes, it does, Penny."

"Then I am convinced this key will fit the lock on Peter Fenestra's storm cellar! His attacker was trying to get it away from him!"

"Just a minute," remonstrated Jerry. "You're traveling too fast for me.

Explain the storm cellar part."

"You'll promise not to use anything I tell you for the _Star_?"

"That's fair enough."

Satisfied that Jerry would keep his promise, Penny told him everything she had learned at the Fenestra farm. The reporter asked many questions about the storm cave.

"So you believe this key may unlock the door?" he mused.

"I'd like to try it, at least."

"Now?"

"There never will be a better time. Mrs. Weems thinks that Fenestra is getting ready to leave Riverview."

Jerry hesitated only briefly. "All right, I'm with you," he said. "Lead the way."

They were leaving the river when both were startled to hear the suspension bridge creak beneath human weight. As they paused, listening, a familiar voice called:

"Jerry! Hey, Jerry!"

"Here!" responded the reporter.

A figure emerged from the trees, and they recognized Salt Sommers, the _Star_ photographer.

"Say, I've been lookin' everywhere for you," he complained. "You're wanted back in Riverview."

"What is this, a gag?" Jerry asked suspiciously.

"It's no gag. The Fulton Powder Company just blew up. Joe, and Gus, and Philips are already on their way. DeWitt sent me to get you."

"The Fulton Powder Plant!" Jerry exclaimed, falling into step with Salt.

"That's a big story!"

"It sure is, and we're late! Get a move on, brother."

Jerry glanced toward Penny, remembering that she too had a "story" to be covered.

"We'll go to Fenestra's place tomorrow," he promised hurriedly.

Knowing that Penny might try to investigate the cave alone, he hooked his arm through hers, pulling her along.