“Don’t tell me it was cold out there, John, old bean!”

“Cold?” breathed John, hurrying below. “It was worse than that. I had to battle sharks to keep warm.”

“There’s a fellow named ‘Gallagher’ now with Nevens’ gang, John,” said Stan, “and I bet that’s my Dad. Seems to me he mentioned that name once the other night, and it would be just like him to go to work for Mr. Nevens.”

Then he told John about Hegarty’s plan to raid Nevens on Thursday at midnight with special attention to the new gunman!

“That means we have to get all the evidence we can before that, John,” Stan said, eagerly. “Fingerprints, photos, and all, because after Thursday it will be too late. The F. B. I. will have to be sure of its ground and in action in time! You and I had better get this cabin fixed up to-morrow and get over to the Island pronto!”

They worked hard all the next morning hammering, sawing, refitting moulding, putting in the secret cupboard under a bunk, changing the galley, and then repainting the whole thing with quick-drying enamel. The painting was not done till after dinner and they had to wait for it to dry. The Sea Hawk was still in the harbor, and Stan had an idea. It was daring and it might bring big results. It was worth a try!

“The tender went ashore a few minutes ago, John,” observed Stan. “What say if we hurry over to the wharf, tie up there, and then follow Hegarty and his men and try to get fingerprints!”

It was no trouble to hoist the sails and close in with the pier, where they tied up and lowered sail. Then they tucked fingerprint powders in small envelopes into their pockets and took along a magnifying glass each. They were afraid to take along the new G-man camera which Mr. Sandborn had given them to replace the broken one, for fear Hegarty might recognize it as such.

They soon located the Sea Hawk’s head man in a lunch room, and both boys sauntered in and took a table near by. The conversation of Hegarty and the two men with him was just about casual things; and they drank beer and did not pay any attention to the two boys.

After a few minutes Hegarty and his men arose, paid the bill, and left, heading for the post office. Stan and John got up too, paid their own bill for a bottle of soda apiece and some doughnuts, and then stepped over to the table just vacated by the others. There was one beer bottle which had passed from hand to hand and this Stanley longed to possess.