Poisoned Well

I got an email from Edward at 8:50 in the morning. I was asleep.

The email's subject line is Poisoned Well:

"A man wandered an endless desert, feeling the sweltering heat of the sun beating against his back. His mouth was parched, dryer than the sand shifting below, and he was willing to do anything for a sip of water.

Surrounding him were wells, dotting the flattened landscape. This should have given him a way to vanquish his thirst, but he knew better. These wells were filled with poison, so dangerous and toxic that drinking from them would've doomed him to an eternity in the desert he so desperately desired to escape. In order to leave, he had to keep going forward, to the epicenter of the expanse. To where it all began.

When it rains, you will hear a tapping against your window."

I emailed him back asking for clarification, but only got an automatic response back. The signature has changed once again to include:

"History shall secure our victory"

I'm unsure what any of this means, but I don't feel safe.