The Spellbinder (1939)

Jed Marlowe is a brilliant, scheming, unscrupulous criminal lawyer whose specialty is defending criminal he knows is guilty but gets them off through loop-holes or bribery. Then his daughter, misled by her father's courtroom performance, but unaware of his back-room tactics, marries the killer her father has just unjustly save from the electric chair. What's a poor father to do?