Cave and Shadows was Joaquin's second and final novel. He would go on to write more biographies and histories, but wrote fiction sparingly. Filipino detective fiction is a sparse category; from what I read (Smaller and Smaller Circles and The Rice Conspiracy), however, this one is the best because Joaquin played to his strengths, which were nuanced characters and the dialectic between faith and apostasy. To me, his novel was reminiscent to Faulkner's detective stories: the whodunit is rather simple, but the characters and motives behind the crime are complex and at times inscrutable. Both authors were also masterful in creating the milieu of their stories: Faulkner illustrated the haunting South through his grotesques, while Joaquin manifested the tug-of-war between culture and boorishness through his characters.
Cave starts with a virginal teen, Nenita Coogan, being discovered as having died inside a cave. She was naked, untouched, and forensic investigation identified that she died of natural causes. The protagonist, Jack Henson, was then tapped by his ex-wife, Alfreda, who eloped with a priest and gave birth to Nenita, to investigate her death. Like the great Joaquin works, the mystical is never too distant from the real: after Jack arrives in Manila, he sees an apparition of a naked girl pulling a crab on a string, which may or may not have been Nenita.
As his investigation progresses, he unearths a battle between the neo-pagan and Christian forces trying to use the cave where she was found dead for their own purposes: the Christians want the cave site to be venerated, while the virgin death of Nenita sparked the neo-Pagan group to celebrate her as among their vestals.
Throughout the novel, the foibles and idiosyncrasies of its characters were unfurled. Rather than true opposition, Joaquin adeptly paints the characters as possessing ambivalent values. The rabid apostate had converted to Christianity; the Christian mayor actually funded a neo-pagan group. Nenita Coogan, a Filipino-American, ultimately chose and "regressed" toward paganism, and Jack Henson, the protagonist, who was tasked to reveal the truth but chose to keep it.
It reminded me of Faulkner's story Hand Upon the Waters which was also a simple detective story. There were no grand conspiracies to overturn, just a sharp lawyer who suspected that a murder had taken place. And like Jack, Gavin Stevens decided to keep the truth to protect those whom he cherished.
If read solely as a detective novel, this book is unimpressive.
Yet, I believe that Joaquin cloaked his commentary on postcolonialism under the guise of a detective novel. What persists with the Filipino people, then and now, is that uncertainty of identity. We want to scream to ourselves that "we are Filipino," and yet we are tied down, inexorably, with the historical burden of other countries' conquests. He nevertheless interjects through his babaylan that one possible solution is to be thoroughly pagan.
The ending, however, proves that Joaquin was neither nescient nor deluded: the weight of our past must be admixed and cohered with the currency of our present, and we must move forward, as Jack did, as lonely people for us to forge a more cohesive identity as Filipino.