Sense Sonnet - Chiller

Agatha's Mystery Unsolved

Agatha Christie in real life
Made a mystery of her own.
Her husband cheated on his wife,
A fact that Agatha had known.
So Agatha did disappear.
For several weeks she was gone.
The public was told, there was fear
That her foul murder had gone on.
Then she was found in a hotel,
Registered in another's name -
Her husband's mistress. She seemed well.
She never told what was her aim.

Her only unsolved mystery -
Was it a murder yet to be!