Use of  May in Agatha Christie

othing--except that I think I may be of some use to you." Anoth

 , and it's possible that that may bring things to a head. I hope

 renew his subscription. "It may catch him," she murmured. "An

 nly a chance, that this woman may have been 'Rita.' " "And if s

 "Excuse me," it said. "But may I speak to you for a moment