The following week, Linda began visiting our house even when my son wasn’t home.
One day, I returned from work and found her in my late husband’s former study.
She was standing by the window, crying.
“What are you doing here?” I asked.
Linda quickly wiped away her tears.
“I’m sorry, Susan. I was just remembering someone.”
But the most terrifying thing happened three days later.
It was two o’clock in the morning.
I heard my son’s voice coming from the kitchen.
“Linda, we can’t put this off any longer. If my mother finds out why you really came here, she’ll never forgive us.”
The rest of the story is in the comments 
Continuation
Then Linda replied:
“I know, Jake. But I’m not leaving until we uncover the secret of this house.”
At that moment, I realized this woman had never been an ordinary girlfriend.
