Murder by an Aristocrat (1936)

... and even then, the nurse who figures out the murder mystery is doing everything by memory and even jumping to some wild conclusions. The guilty party would need a lawyer as bad as my sister's divorce attorney to allow the guilty party to confess, because there really is no solid evidence.

The set-up is this. Portly and distasteful Bayard Thatcher threatens the other Thatchers with exposure and scandal - there are many in this prominent family - if they do not give him 25K by the following night. Then he actually has the nerve to spend the night at the family mansion. An attempt is made on his life, but he survives, although for some reason he is never transferred to the hospital. The family tells the doctor that Bayard was shot cleaning his revolver, so the police are not called. Plus it turns out the D.A. is a Thatcher too. The gun is left behind and Bayard puts it under his pillow. Sometime during the night the gun is stolen. The next afternoon the job is finished, a bullet is shot through Bayard's heart except this time the gun is not left behind.

The only outsiders are Doctor Allen Carrick (Lyle Talbot) and the nurse that is assigned to watch over the patient, Sally Keating (Marguerite Churchill), also a love interest of Dr. Carrick. She is witness to lots of goings on, but I could never figure out how she could piece together what she saw - including a dog merely leaving the house - and spin it into a tale of murder and who the guilty party was.

This film is only one hour long and lots of fun with lots of action. And old Bayard is so unpleasant to everybody that just about anybody he speaks to, including the servants, could have done it. Watch and see if you can figure it out. It certainly is not boring and much better than the current mediocre rating implies.