Brain Waves by Dennis Murphy

Set in Colorado, Costa Rica, and on the fringe of heaven, Brain Waves is an inspirational medical suspense story that begins as a tale of revenge and intrigue but turns into one of forgiveness. The author weaves neuroscience, computer technology and philosophy into a compelling story about a man who refuses to enter heaven too soon. That man, former Navy SEAL turned inventor Mark Farrell, has long been determined to leave his own mark on the world. He winds up leaving a greater legacy than he could have ever imagined.