At any rate, as he neared the plant, he was glad he had come.

Griff, at the gate, was in close communication with a mysteriously furtive stranger!

CHAPTER XI
A TRAIL AND A FLIGHT

Twisting his handlebars sharply, Bob sent his bicycle into brush at the end of the aircraft plant grounds where the fence turned; he wanted to get out of sight.

The pair at the gate were having some sort of argument and probably had been too excited and absorbed to notice him, Bob decided.

He dropped his wheel and crept back to the corner of the fenced enclosure to watch.

From that position he could see the man, but only part of Griff’s coat and an arm. The man, as he saw, was vigorously arguing. Griff must have been either pleading or arguing, Bob guessed, from the man’s violent gestures and appearance of “laying down the law.”

Presently a small, flat package came into view.

Bob recalled that he had seen Griff wrapping exactly that sort of parcel earlier.

The man took it, put it rapidly into his coat pocket, inside. With a quick look up and down the deserted highway he swung and crossed to a car parked on the opposite side of the road. Climbing in he speeded up his engine and drove away at constantly increasing speed.