The Perfect Murder

Her husband was plotting her murder and she needed help to escape the house.His chivalry made him help her escape to safety.Next day he was arrested for the murder of her husband.His finger prints were all over the place and the murder weapon was found on him.He remembered how he had taken the revolver from her gloved hands and reassured her that it'd never be used against her!
  "She was beautiful and had feline grace and as is known of a cat,she'd covered her tracks well!",muses he,now in his prison cell.
                                                Chandni