Detective O'Finn is a handsome homicide detective who is summoned to the home of four older ladies, who reveal to him that their fifth friend has died suddenly. The ladies are clearly taken with the young man, and fawn all over him. The corpse is taken and an autopsy performed, with the result of the death being arsenic. The detective returns to the home and the ladies neither admit nor deny the crime as they dote all over him while insisting he has tea. Another woman is killed, and this time, after the autopsy, O'Finn flat out accuses the ringleader - Hildy Lou - of murder. He insists on her coming to the station, at which she's enraptured. The two homicides were simply a ploy to get him to visit their home, and he is horrified. He asks to be removed to arson. Some time later, the home where the two remaining ladies live goes up in flames.