Adler owes Panessi, a police captain, $5,000. Adler threatens that unless Panessi discharges him from the debt, Adler will disclose the fact that Panessi has on several occasions become highly intoxicated and has been seen in the company of certain disreputable persons. Panessi, induced by fear that such a disclosure would cost him his position or in any event lead to social disgrace, gives Adler a release but subsequently sues to set it aside and recover on his claim. Will Adler be able to enforce the release? Why or why not?