In 2006, Nathan P. Butler self-published a murder mystery that was deemed a cross between The West Wing's political intrigue, Law and Order's investigatory feel, and The X-Files' supernatural tendencies. This novella, Echoes, is slated to receive a professional, heavily-revised and updated release from Grail Quest Books in late 2012 or early 2013.
Echoes
Self-Published Edition

This is the cover for the original, self-published edition of Echoes from 2006. You might consider it a collector's item now, since it is no longer available. It features the "untweaked" text that refers to, for example, a Ford Mustang instead of the fictional Rathe Stallion. It also lacks the afterword that will appear in the professional relaese. It was this version of text that, at one time, had an audio release on Podiobooks.com.