Whitley Strieber is the author of The Afterlife Revolution which is a very unique look at the afterlife, and the things both Whitley and his wife Anne have learned not only through a Near Death Experience but also Anne's passing in 2015. When both alive, Anne and Whitley made a pact to communicate with each other from the other side. And just two hours after Anne died, this plan began to unfold.

The drawing done by Cherylee Black is below:

To learn more about Whitley, and his book The Afterlife Revolution, you can visit:
https://beyondword.com/products/the-afterlife-revolution

The diary entries that Whitley refers to can be found at:
https://www.unknowncountry.com/annes-diary/new-annes-diary-the-peace-of-the-heart