Project to find use of may in Agatha Christie

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

Wait--I must warn you. There may be a risk--if I've been follow

 nt in this morning's paper, I may be able to be of some use to

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