shack was empty. The door was padlocked.
As Frank and Joe wandered among the huts, they noticed that each one had a trash heap of its own in the rear. Suddenly Joe darted to a pile in which something glinted in the sunlight.
âWhat did you find?â Frank called, and ran forward to look.
âPop bottles!â Joe exulted, holding one aloft. âFizzle soda!â
CHAPTER XII
The Desolate Island
JOE picked up another bottle from the rubbish heap. âItâs exactly like the one we pieced together last night,â he declared. âThese prove the bank robbers are linked up with Shantytown!â
âIt looks that way,â Frank conceded. âButâFizzle soda may be sold around Bayport. As you said, we donât know for certain that the robbers used the Sleuth. Somebody may just have âborrowedâ it for a joy ride.â
âWell, the bottles make it likely that the robbers are connected to this place,â Joe amended. âBut letâs scout around some more.â
The two boys, hands in pockets, strolled casually among the shacks. Although they looked closely at the few squatters hanging around, they saw no one they recognized. Disappointed, the brothers circled back to the trash heap.
âWeâre getting nowhere,â said Joe, disheartened.
Suddenly Frankâs body tensed. âSh! Listen! Hear that?â
âAll I hear is the ocean.â
âSomeone is groaning!â
Still listening intently, Frank turned and looked all around him. The nearest building was a gray, windowless shack with a closed door. Abruptly he strode toward it, Joe behind him.
Reaching the handleless door, Frank gave a tentative push and it swung open. Warily he stepped inside and blinked for a moment in the darkness.
âJoe! Quick!â
A man lay huddled on a cot. His face and the blanket he clutched were smeared with dried blood, and he moaned and heaved for breath.
âThe manâs unconscious,â said Frank as he took the limp wrist for a pulse. âFind water, Joe. Maybe thereâs some in the jug on the table.â
Joe looked into the container. âWeâre in luck!â He soaked his handkerchief and bathed the injured manâs face. As the blood and dirt came away, the boy gave a gasp of surprise.
Hank Sutton!
âHeâs badly hurt,â Frank observed. âCuts and bruises on the head, and shock. Might be fractures, too,â
âIâll call the police ambulance,â Joe volunteered. âWe passed a house about a mile down the road. They must have a phone.â
âHurrylâ Frank urged. âIâll stay here.â
Joe sprinted for his motorcycle. While he was gone, Frank searched the dim hut for clues to an assailant, but found nothing.
Soon an ambulance, its red lights blinking, was speeding toward Shantytown. A police car followed. When they passed the house where Joe had telephoned, he zoomed after them.
At Shantytown he led an intern and two stretcher-bearers across the sand to the hut where Frank waited with the injured Sutton.
âHow is he?â asked the doctor quickly on entering. âIs he conscious yet?â
âNo, heâs delirious,â Frank said. âHe keeps mumbling something over and overâa manâs name.â
âWhose?â asked Joe eagerly. He had appeared in the doorway, with Chief Collig behind him.
Frank looked up at them with a frown. âAlf Lundborgâs, Iâm afraid.â
âSo he took his revenge on Sutton,â the chief concluded. âThatâs bad.â
The intern hustled everyone out of the way. Expertly the injured man was transferred to the stretcher and borne across the sand to the waiting ambulance.
Chief Collig and the boys trailed along. âWeâll have to pick up Alf,â the chief remarked. âHe had the perfect motive for assaulting Sutton.â
âJust the same I donât believe he did it,â
Arturo Pérez-Reverte