Open and shut domestic murder.

（単純明快な家庭内殺人だ。）
　BBCドラマ「SHERLOCK」S1エピソード3 "The Great Game" より。手がけた（手がけるまでもなかった）事件について語るシャーロック。

• "open and shut"は、事件や訴訟、問題が「単純明快な、明々白々な」と言う時の表現。（if a legal case or problem is open and shut, the facts are very clear and it is easy to make a decision or find a solution／a legal case or other matter that is easy to prove or decide because the facts are very clear／able to be settled or decided very quickly and easily／describes a problem or legal matter that is easy to prove or answer）
• "simple and clear"って表現あるけど、それのリーガルバージョンって感じかな。
  • The police think the case is open and shut: five witnesses saw the man stealing the car.
  • It's going to take a lot of work to deal with this problem. It certainly isn't an open-and-shut matter.
  • Her first assignment as a lawyer was an open-and-shut case involving a drunk driver.
  • The murder was an open-and-shut case.
  • Our lawyer thinks that we have an open-and-shut case.

（S3、私はUS版ブルーレイ待ち。もう見た人がうらやましい！）