d be told by those who put
their heads out of the opened windows. And Mr. Bobbsey had not come
back.

"I wonder if anything has happened," remarked Mrs. Bobbsey.

"I'll go and find out, Mother," offered Bert, getting up from his seat.

"No, indeed, I can't let you!" his mother answered. "Your father would
not like it. He may be back any moment."

"I don't believe anything much has happened, ma'am," said a man across
the aisle from Mrs. Bobbsey. "I can see some men up near the engine, but
they are talking and laughing."

"Then they aren't robbers," said Freddie to his older brother Bert,
"'cause robbers wouldn't laugh."

"Well, if they're not train robbers why have they guns and false faces
on?" asked Bert.

"Maybe they're just making believe--same as when we have pretend-plays,"
put in Flossie.

"Do you pretend, and make believe?" asked Tommy Todd, of the two younger
twins.

"Oh, yes, lots of times," Freddie said. "We have heaps of fun that way;
don't you?"

"Sometimes," answered Tommy in a low voice. "Sometimes I pretend I have
gone off in a ship, and that I've found my father. I make believe that
he and I are sailing together. And oh! how I wish it would come true!"

"Maybe it will--some day," said Flossie softly, as she patted Tommy's
hand which was on the back of the seat in front of her.

"I must go out and see what is keeping your father," said Mrs. Bobbsey
at last. "Something must have happened. You children stay here with
Dinah. Nan and Bert, you look after Flossie and Freddie."

But there was no need for Mrs. Bobbsey to leave the car for, just then,
her husband came in. He was smiling, and that seemed to show that
nothing very serious was the matter.

"What is it?" asked Bert.

"Are the men playing a game?" Freddie demanded.

"Is the train off the track?" asked one of the fresh air boys. "I hopes
it is--that is, if nobody is hurt, 'cause then we won't have to go home,
and maybe we can go back to the country."

"No, the train isn't off the track," answered Mr. Bobbsey. "It's a
hold-up by masked robbers."

"There! What'd I tell you?" cried Bert to his brother and sisters. "I
_knew_ they were masked robbers."

"But only make-believe," went on Mr. Bobbsey, still smiling. "This is a
hold-up, or stopping of the train, and a pretend robbery for moving
pictures."

"Moving pictures!" cried Mrs. Bobbsey.

"Yes. There is a man up front, near the engine, with a moving picture
camera. With him a