"What's the matter?" called Joe.
He ran up in time to see Frank standing in the roadway, an expression of consternation on his face.
"The bikes!" he exclaimed. "There are only two here!"
"What?" yelled Joe.
"One of our bikes is missing! What do you know about that!"
As Chet and Joe hastened up they saw that he was right. Where three motorcycles had been parked beside the road, there were only two left.
Frank's motorcycle was gone!
CHAPTER VII
Carl Schaum
Frank Hardy wasted no time.