Jǐngchá dàibǔ le zhè cì fànzuì de zhǔyào cèhuàzhě.
The police arrested the main mastermind behind this crime.
Tips
usage
策划者 can be neutral (event planner, organizer) or negative (schemer, mastermind of a crime). Context determines tone. In neutral use, you might see 活动策划者 (event organizer). In negative contexts, 幕后策划者 (behind-the-scenes mastermind) is common.
