"Oh, who would be so mean?" gasped one of the twins.
"There are four other contestants in the eight-oared class," said Bobby, grimly.
"You don't believe any of the other girls have stolen the shell?" cried Dora, in horror.
"Why, Bobby! how could they do it? And in the night, too?" demanded Dorothy.
"I don't say who did it. But it may have been somebody hired to do it by some other crew."
"Keyport?" suggested Dora, doubtfully.
"They're the very best crew on the lake—next to ours," added Dorothy.
"And they probably think themselves the better of the two," said the shrewd Bobby. "I'd suspect either of the other three first."
"But it's just awful to suspect any of the other Highs. What a mean, mean trick!"
"If they'd only taken the old shell," wailed Dorothy.