誘拐犯

1. Origins, structure, and basic meaning

• Structure: 誘拐犯 (ゆうかいはん) is a compound noun for a person who commits kidnapping. 誘拐犯の居場所 is information sought; 誘拐犯は is an actor in a play.
• Basic usage: A detective discovers the kidnapper's location; the stage abductor later releases the hostage.

2. Common pitfalls and similar expressions

• Location of a suspect tracked and suspect acting in the plot
  • The direct object in the first sentence is 居場所, not the culprit. In the second, the culprit is the subject of 人質を解放した; both remain within fictional works.