This is not an entirely new idea, the 1954 film "Rear Window" has a similar theme, while the 1946 film "Shock" has more or less the same storyline, nevertheless, it is a fair effort.
When a woman witnesses a murder from the balcony of her apartment, she is suddenly struck dumb. In a panic, her husband rushes to a neighbour whom he knows to be a doctor. Yes, you guessed it, it was the doc who committed the murder, so what does he do? He gives her a liquid cosh and transports her to the small private sanatorium where he is lord and master.
Fortunately - though not for him - he has a heart condition - but unfortunately before his foul deeds are undone, there will be another untimely death.
When a woman witnesses a murder from the balcony of her apartment, she is suddenly struck dumb. In a panic, her husband rushes to a neighbour whom he knows to be a doctor. Yes, you guessed it, it was the doc who committed the murder, so what does he do? He gives her a liquid cosh and transports her to the small private sanatorium where he is lord and master.
Fortunately - though not for him - he has a heart condition - but unfortunately before his foul deeds are undone, there will be another untimely death.