Submariners of the Gods (Doc Minus Two Book II)
by Glenn Roug
Six fishing boats are mysteriously torpedoed in broad daylight, as if by an invisible predator. No one can determine who or what perpetrated the attacks, or where it came from. The only hint is the existence of posters of an obscure Aztec god that are found near all sinking sites. The gruff Doc Minus Two, a failed medical doctor turned detective, travels to Mexico to investigate.