Erin Gilbert (Author) Erin Gilbert is a co-founder of the Ghostbusters, an expert on the paranormal and the author of Ghosts from Our Past. Abby L Yates (Author) Abby L Yates co-founded the Ghostbusters with Erin Gilbert. Ghosts from Our Past was her first book, now finally back in print. Andrew Shaffer (Author) Andrew Shaffer is the New York Times-bestselling author of the essential survival guide, How to Survive a Sharknado and Other Unnatural Disasters, as well as the forthcoming Ghostbusters tie-in, Ghosts from Our Past: Both Literally and Figuratively: The Study of the Paranormal. He's not a scientist. He's more like a game show host. You can find him online at www.andrewshaffer.com.