Signals is an extraordinary true story of two friends, both living with AIDS, who make a simple but spiritually challenging pact: whoever dies first will try to contact, or "signal," the other from beyond. Joel Rothschild, the more skeptical of the two, is the one left behind. His book chronicles a series of miraculous experiences and encounters that tell an amazing story and offer proof of an afterlife. One man's journey from skeptic to believer,...