The great swamp mystery was too much for them.
By this time the sun had risen and flooded the scene, dispelled the vapors that hung over the bog and lighted up the surrounding country.
"We'd better get out of here," said Old King Brady. "I see a fine old residence over there on the mainland. Let's get over there and get our breakfast. I'm going to keep at this swamp till I solve that mystery."
Crossing the board walk, they made a detour and reached the house.
It was a fine country residence with many acres of ground, part of which was formed by the swamp.
They Saw a big negro in overalls standing at the gate and Harry asked him:
"Say—who lives here?"
"Oliver Dalton, the Broad street broker, sir," replied the colored man.
This reply startled the detectives, for the owner was the very man whose case of mail robbery had been placed in their hands.
They glanced significantly at each other, and that look spoke volumes.