mas•ter•mindPronunciation: (mas'tur-mīnd", mä'stur-), [key]
to plan and direct (a usually complex project or activity), esp. skillfully: Two colonels had masterminded the revolt.
a person who originates or is primarily responsible for the execution of a particular idea, project, or the like: the masterminds of company policy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.