Fred: I can’t believe the butler did it! What about the maid’s missing alibi?

George: That was just a red herring.

A red herring is something that seems important, but is actually just there to distract you from what is really important. It is common in mystery stories, because it would not be very interesting if it was too easy to solve the crime.

フレッド:執事が犯人だなんてびっくり!メイドの見えないアリバイは?

ジョージ:それはただのおとりだ。

「おとり(赤いニシン)」は、大切なことに見えるが実は本当に大切なことから気をそらすためにあるだけです。ミステリーのお話によく出ます。犯人は最初から明らかだとつまらないですから!