密みっ室しつ殺さつ人じん

noun

locked-room murder

Refers to a murder committed in a space that appears to have been sealed from the inside, with no obvious way for the culprit to have entered or exited. A staple trope in detective fiction.

• このミステリー小しょう説せつは密みっ室しつ殺さつ人じんを扱あつかっている。