mystery story
— Noun
– English
～ a story about a crime (usually murder) presented as a novel or play or movie
mental strain
— Noun
– English
～ (psychology) nervousness resulting from mental stress; "his responsibilities were a constant strain"; "the mental strain of staying alert hour after hour was too much for him"
Menai Strait
— Noun
– English
～ a strait in northern Wales between Anglesey Island and the mainland