Agatha Christie's Marple2004

Miss Jane Marple:
Why does Inspector Slack think the Colonel was shot at twenty past six?

Dr. Haydock:
He'd started writing a note to the vicar saying he couldn't wait. He put the time on it.

Miss Jane Marple:
Had he?

Dr. Haydock:
And the clock stopped at just gone 6:20. He knocked it off the desk when he took the bullet.

Miss Jane Marple:
Oh, dear. I'm afraid I must put a cat amongst the Inspector's pigeons.