I was rereading the testimony of both Helen Ferguson and Jim Conley and find something a little strange...
Okay so Ferguson claims she asked Leo Frank for Mary Phagan's money on Friday April 25th at 7:00 at night. She says he told her "I can't let you have it".
Jim Conley says that on Friday evening at 3:00 Leo Frank told him to be at the Factory the next day.
I could see why Leo Frank may have told Conley to come to the Factory after he knew Mary may come to the factory because he had not given Helen her pay when she had asked for it but I find it hard to believe that he would have asked Conley before this incident. How could Leo Frank have known for certain at 3:00 that Mary would come for her pay before Helen had asked for her pay at 7:00?
This once again puts more than a little doubt on the time line for the case against Leo Frank, except this time it calls into question the time line of the day before the murder of poor Mary Phagan.