have been if that whole crew ain't lying, the gunman musta been good, because you can't sight with a Maxim screwed onto a rod, you know." "Have your men found the gun?" Dundee asked. "Of course not, or I'd know whether it had a Maxim on it or not," Strawn retorted. "My theory is," he added impressively, "that somebody with a grudge against this dame hired a gunman to hang around till he got her dead to rights, then—plop!" and he imitated the soft, thudding sound made by the discharge of a bullet from a gun equipped with a silencer. "Doesn't it seem rather strange that a professional gunman should have chosen such a time—with men arriving in cars, and the house full of women who might wander into this room at any minute—to bump off his victim?" Dundee asked. "Well, there ain't no other explanation," Captain Strawn contended. "Outside of the fact that my men have gone over the whole house and grounds without finding the gun, I've got other evidence it was an outside job.... Look!" Dundee followed the Chief of the Homicide Squad to one of the two windows that looked out upon the driveway. Both were open, since the May day was exceptionally warm, even for the Middle West. The unscreened window from which he obediently leaned was almost directly in line with the vanity dressing-table across the room. "Look! See how them vines have been torn," Strawn directed, pointing to a rambler rose which hugged the outside frame of the window. "And look hard enough at the flower bed down below and you'll see his footprints.... Of course we've measured them and Cain, as you see, is guarding them till my man comes to make plaster casts of them.... Yes, sir, he hoisted himself up to the window ledge, aimed as best he could, then slipped down and beat it across the meadow." "Then," Dundee began slowly, "I wonder why Mrs. Selim didn't see that figure crouched in the window, since she must have been powdering her face and looking into the middle of the three mirrors—the one which reflects this very window?" "How do you know she was powdering her face, not looking for something in a drawer?" Strawn demanded truculently. "For three reasons," Dundee answered almost apologetically. "First: her powder puff, as I'm sure you noticed, is still clutched in her right hand; second: there is no drawer open, and no drawer was open, unless someone has closed it since the murder,