Find out what they want and who they work for, you're halfway to controlling them.
A 1 Gift Investigate Individual Power used by Bill Brenner, created by BobDylan530.
Bill is well practiced at reading people, and can use subtle clues from dialogue and body language to discern someone's desires, as well as whether or not their behavior is being influenced by a deal or contract they are subject to. He must be engaged in conversation with someone in order to pick up on these details, and someone paying close attention might notice him casually but frequently touching his passport throughout the conversation.
Exert your Mind, choose a Sapient target within Arm's Reach and spend 1 Minute examining them. At the end of the cast time roll Charisma + Investigation6. The quality of the information you receive depends on your Outcome, and the nature of the information depends on the Enhancements you have chosen. Difficulty
The number of information-revealing Enhancements attached to this power is limited to 2 for Novice characters, 4 for Seasoned characters, and 7 for Veteran characters. You may still take any number of other, non-informational enhancements.
Type of Information - Any major and currently active deals or agreements they have entered into