And then the murders began

This tweet:

…is going to ruin my Monday work plans.

I’ve already been having some fun:

Goldilocks and the Three Bears:
“Once upon a time, there were three bears: a daddy bear, a mummy bear and a baby bear. And then the murders began.”
A Tale of Two Cities:
“It was the best of times, it was the worst of times. And then the murders began.”
Er… The Bible:
“In the beginning God created the heavens and the earth. And then the murders began.”
Charlotte’s Web:
“‘Where’s Papa going with that ax?’ said Fern to her mother as they were setting the breakfast table. And then the murders began.”
Catch-22:
“It was love at first sight. And then the murders began.”
Harry Potter and the Philosopher’s Stone:
“Mr and Mrs Dursley, of number four, Privet Drive, were proud to say that they were perfectly normal, thank you very much. And then the murders began.”
and The House at Pooh Corner:
“‘I wonder what Piglet is doing?’ thought Pooh. And then the murders began.”

There will be many, many more, because this rule works nine times out of ten.
Please feel free to share your favourite examples in the comments below.