There are Things That Go Bump in the Night... The Supernatural Handbook is a sourcebook of heroic horror for the Mutants & Masterminds Superhero Roleplaying Game. It lays out the elements for a successful M&M game in which the strange and paranormal are true and a few lone heroes struggle against the Things That Go Bump in the Night. Join the fight against ancient evils and occult menaces with the Supernatural Handbook! You're Not Afraid... Are you?