* Betrayal and forgiveness: Secrets often involve betrayals, and the novel probably examines the process of confronting those betrayals and the possibility of forgiveness.
* Identity and self-discovery: Uncovering family secrets can lead to a profound shift in one's understanding of oneself and one's place within the family.
* Family dynamics and communication: The lack of open communication and the presence of secrets significantly affect the relationships between family members.
* The weight of the past: The novel likely explores how past events, even those kept hidden, continue to shape the present lives of the characters.
Without knowing the specific plot of Rodriguez's "Secret Story," these are general themes often explored in novels with similar titles and subject matter. The precise nuance of the theme will depend on the specific narrative.