He was just about to jump into the boat, when Harry cried:
"Now!"
The Bradys rushed from their covert.
The two desperadoes were completely surprised by the sudden appearance of the two noted detectives.
"The jig is up, boys," said Old King Brady, as he covered his man.
Sim raised both hands above his head.
"Don't fire! I gibs in!" he roared, in terrified tones.
At the same moment Harry aimed his pistol at Mason and cried:
"You surrender, or I'll kill you, Mason!"
"Drop that gun, Brady!"