Here's a short story:

CHAPTER XXI 

THE PICTURE IN THE CARDCASE 

"Who is it?" questioned Hans, trying to gain possession of the photograph, but instead of answering Sam started from the cabin. 

"I must show this to Dick and Tom!" he cried. "Come along." 

"Yah, put--" began the German boy, and then stopped, for there was nobody to talk to, Sam being already out of sight. 

"Dick, look what I found," cried the youngest Rover, as he dashed into the pilot house. 

"A fortune?" asked Dick, with a smile. 

"No, a picture. Just look!" 

Dick did as requested and gave a start. 

"You found this on the yacht?" he cried. "Yes. In the pocket of a big coat hanging in one of the lockers. It was in a cardcase." 

"This is certainly queer. It looks exactly like Harold Bird, doesn't it?" 

"It certainly is Harold. I wonder--Oh, look!" 

Sam had turned the picture over. On the back were these words, written in a strong, masculine hand: 

To father, from Harold. Merry Xmas! 

"Why, Harold must have given this to his father," said Dick, thoughtfully.--"And if so--" 

"Do you think the coat belonged to Mr. Bird?" broke in Sam. 

"Perhaps. Did you find anything else?" 

"Ve titn't look," came from Hans, who stood in the doorway. "So dot vos a picture of Harold Pird, alretty! Dot vos kveer!" 

"It is astonishing," said Dick. "Sam, see if you can find anything else." 

Sam went back and Hans with him, and while they were gone Dick, through the speaking tube, acquainted Tom with the discovery made.  (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Who tried to get the picture?
Guess: Hans

Question: Who was holding the picture?
Guess: Sam

Question: Who did he want to have gaze at the picture?
Guess: Dick and Tom

Question: Did he find the photo in the water?
Guess: no

Question: What was it on?
Guess: In a coat in one of the lockers.

Now answer the following question in the same format.

Question: And what was around the photo protecting it?

cardcase