Mafia / Mob Romance
Ruthless Vow: A Secret Baby, Bratva Romance (Sinful Mafia Daddies)
Part of the Sinful Mafia Daddies series · Reading order →
SpiceDarkness
- Kindle, paperback & audiobook on Amazon
- Spice & darkness rated — content warnings listed below
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Why we recommend it
A secret-baby Bratva romance where a sinful mafia vow complicates an already dangerous bond. Possessive power plays meet real vulnerability underneath.
At a glance
Ruthless Vow is a mafia romance by Natasha L. Black. It rates 4/5 for spice and 3/5 for darkness, on the lighter side for mafia romance: of the 931 mafia romance books we rate, almost none score lower for darkness and 24% lower for spice. Tropes: secret baby, morally grey MC and possessive-obsessive MC. Secret baby is one of the less common tropes in our catalogue. It is lighter than Natasha L. Black’s other books on Readark (average darkness 3.5/5). It runs to 254 pages. We have not tagged its content warnings yet, so check the author’s notes before you start.
Book details
- Pages
- 254
- Published
- May 2026
Ruthless Vow spice level
Ruthless Vow is rated 4/5 for spice on Readark’s scale: explicit and frequent, meaning multiple detailed scenes, with heat central to the story. Its darkness rating is 3/5: genuinely dark, meaning violence, coercion or captivity drive the plot, not just the mood. How we rate
Ruthless Vow content warnings
We haven’t tagged content warnings for this book yet. If you have specific triggers, check reader reviews before you start.
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