1. Adler owes Perreault, a police captain, $5,000. Adler threatens that unless Perrault discharges him from the debt, Adler will disclose the fact that Perreault has on several occasions become highly intoxicated and has been seen in the company of certain disreputable persons. Perreault, 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. Does Adler have to pay up?