Under_Sage
In a house built on public pity and private resentments, the most dangerous person in the room is the one nobody is watching.
When her father collapses in the boardroom, Seraphine "Sera" Kastellan comes home. To the press, the public, and her five world-famous brothers-an industrial CEO, an international surgeon, an investigative journalist, a champion racing driver, and a prodigy cryptographer-she is the frail, sheltered sister raised abroad for twenty years, a fragile name on charity letterheads.
They are wrong about everything.
Recruited at seventeen into a world of shadowed intelligence and silent operations, Sera isn't back for a family reunion. She's back because a threat is quietly dismantling the Kastellan dynasty from the inside out, turning her family's legendary influence against them.
Now, she has to balance playing the harmless invalid for her suspicious brothers while secretly hunting an adversary who knows her every move-all while navigating a razor-thin alliance with Dominic Vance, a former naval special-ops contractor who is far too close to discovering what she really is. Every operational risk threatens her cover; every domestic moment risks an irreversible fracture.
A high-stakes, slow-burn romantic suspense about espionage, sibling rivalry, family comedy, and the heavy cost of a twenty-year lie-for readers who love the razor-sharp tension of elite spy thrillers and the volatile family dynamics of Succession.