His book Edgar Allan Poe: An Illustrated Companion to His Tell-Tale Stories won the Edgar Award for 2009 in the category best critical/biographical. The same book received an Agatha nomination for best non-fiction book.[6]
Edgar Allan Poe: An Illustrated Companion to His Tell-Tale Stories (2008)
ISBN1-4351-0469-2 NOTE: This title won the 2009 Edgar award in the category best critical/biographical.
God and the Cosmos: Divine Activity in Space, Time and History [co-authored with Jimmy H Davis] (2012)
ISBN0-8308-3954-2
Evermore: Edgar Allan Poe and the Mystery of the Universe (2012)
ISBN1-6025-8322-6