Characterized by, exhibiting, or likely to bring about metamorphosis.

designating a mystery or detective story involving a crime scene which no criminal could apparently have entered or left (such as a locked room); of…

= locked-room adj. at locked, adj.2 compounds 2. Also absol. in related use. (Frequently used in detective novels.)

attributive. Of popular literature, etc.: characterized by the capacity to arouse suspense, excitement, or apprehension, as suspense novel, suspense…

spec. Of or designating crime fiction (or television drama, etc.) characterized by detailed, realistic treatment of professional, esp. police…

Resembling or evocative of a children's adventure story; characterized by daring and heroism; exciting.