Is in the pay of someone - Idioms by The Free Dictionary
be in the pay of (someone or something) (redirected from is in the pay of someone)
be in the pay of (someone or something)
To work or do business for a person or group, usually clandestinely. Oh, he isn't in the pay of the mob—that's just a rumor.
be in the pay of somebody/something,
be in somebody’s/something’s pay (usually disapproving) be working for somebody or for an organization, often secretly: He’s been in the pay of our rivals for the last ten years.