Author S. Heredia is a former U.S. Marine turned dark romance architect, building a vampire world so seductive readers are publicly switching sides from werewolves to the fanged. His debut novel, The Sigil’s Mark, launches the Sigils of the Veil saga: a gothic, NSFW vampire romance that weaves 18th-century Spain, modern Seville, and an ancient Vampire Court into a story of forbidden love, brutal loyalty, and unapologetic heat. Blending the emotional punch of epic fantasy with the addictive pace of BookTok romance, Heredia writes for readers who want both rich worldbuilding and open-door spice.
Early readers describe The Sigil’s Mark as “cinematic,” “impossible to put down,” and “the book that finally made me a vampire girl.” Centered on Decon, a blood-forged general bound by duty, and a woman known only as White Lotus, the novel hits fan-favorite tropes “touch her and die,” “forbidden lovers,” and “he rose for her” while delivering a fresh, immersive mythology built around sigils, courts, and consequence. With a growing presence on TikTok and a fiercely engaged reader base, S. Heredia brings not just a book, but a brand readers want to belong to... making him an ideal author for events, interviews, and bookstore features that want a guaranteed conversation starter
S. Heredia is the kind of author you don’t forget meeting.
Equal parts friendly menace and Vampire Daddy energy, he moves through the dark fantasy and romance space as a provocateur, architect, and unapologetic lover of the vampire myth done right. He is the creator of The Sigil’s Mark, the first novel in the Sigils of the Veil series, a world where vampires exist in the real world, not a sanitized fantasy, not sparkling, not bursting into ash, and not pretending danger is decorative.
Heredia was dared to write his first novel at the beginning of 2025. He took the dare personally. By late summer, The Sigil’s Mark was published, launching a dark romance universe born not from trend chasing, but from lust, longing, and the raw truth that some love stories are only possible in the shadows. His vampires exist because desire exists, because power exists, because hunger exists, and because pretending otherwise is boring.
At the heart of the series is Decon De Alcázar, a Blood-Forged General whose war, faith, betrayal, devotion, and violence are pulled directly from Heredia’s own life experiences as a United States Marine. Decon is not a metaphor, he is an echo. The discipline, the loyalty, the moral fractures, the burden of command, and the cost of love all bleed onto the page. The line between author and character is intentionally thin.
His stories seduce and awaken, blending elegant, explicit intimacy with grounded worldbuilding and emotional consequence. This is dark romance for readers who want heat without fantasy fluff and danger without nonsense.
His audience, proudly known as The Fledgling Nation, is made up of sexually confident, curious women who crave dark romance that respects their intelligence, their desire, and their appetite for something sharper than mainstream paranormal fiction. These readers are not tourists. They stay. They engage. They build community. And Heredia meets them there, openly, humor intact, teeth showing.
On panels and stages, Heredia is dangerous, funny, disarming, and deeply aware that storytelling is meant to be shared, not gatekept. His sessions feel less like lectures and more like late-night conversations with friends who love stories, love vampires, and love asking the questions polite fiction avoids. Expect laughter, flirtation, mythic undertones, and zero shame about why we keep returning to monsters for comfort.
If you ever meet him at a signing, a con, or a bar... don’t be surprised if he raises a glass and says exactly what his readers say to him:
“I feel like I’ve known you forever."
S. Heredia is the kind of author you don’t forget meeting.
Equal parts friendly menace and Vampire Daddy energy, he moves through the dark fantasy and romance space as a provocateur, architect, and unapologetic lover of the vampire myth done right. He is the creator of The Sigil’s Mark, the first novel in the Sigils of the Veil series, a world where vampires exist in the real world, not a sanitized fantasy, not sparkling, not bursting into ash,...
