mself on the
cold slippery stone. "I know who you are," he said.

"Who, then?" she challenged.

"You're an FBI agent planted on Bancroft."

Her gaze narrowed, her lips compressed. "What makes you think so?"

"Never mind--you are. That gives me a certain hold on you, whatever
your purposes."

The blond head nodded. "I wondered about that. That remark you made to
me down in the cell suggested--well, I couldn't take chances.
Especially when you showed you were something extraordinary by
snapping those straps and bursting the door open. I came along with
the search party in hope of finding you."

He had to admire the quick mind behind the wide smooth brow. "You damn
near did--for them," he accused her.

"I couldn't do anything suspicious," she answered. "But I figured you
hadn't leaped off the cliff in sheer desperation. You must have had
some hiding place in mind and under water seemed the most probable.
In view of what you'd already done I was pretty sure you could hold
your breath abnormally long." Her smile was a little shaky. "Though I
didn't think it would be _inhumanly_ long."

"You've got brains," he said, "but how much heart?"

"What do you mean?"

"I mean, are you going to throw Dr. Tighe and me to the wolves now? Or
will you help us?"

"That depends," she answered slowly. "What are you here for?"

His mouth twisted ruefully. "I'm not here on purpose at all," Dalgetty
confessed. "I was just trying to get a clue to Dr. Tighe's
whereabouts. They outsmarted me and brought me here. Now I _have_ to
rescue him." His eyes held hers. "Kidnapping is a Federal offense.
It's your duty to help me."

"I may have higher duties," she countered. Leaning forward, tautly,
"But how do you expect to do this?"

"I'm damned if I know." Dalgetty locked moodily out at the beach and
the waves and the smoking spindrift. "But that gun of yours would be a
big help."

She stood for a moment, scowling with thought. "If I don't come back
soon they'll be out hunting for me."

"We've got to find another hiding place," he agreed. "Then they will
assume I survived after all and grabbed you. They'll be scouring the
whole island for us. If we haven't been located before dark they'll be
spread thin enough to give us a chance."

"It makes more sense for me to go back now," she said. "Then I can be
on the inside to help you."

He shook his head. "Uh-uh. Quit making like a stereoshow detective. If
you leave me your gun, claiming