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An Heir for the Don: A M/M Mafia Arranged Marriage Omegaverse Mpreg Romance

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He needed an heir. I needed security. Neither of us expected to fall in love.

Marco Rossetti has spent six years rebuilding from the ashes of his father's destroyed mafia empire. When Don Vincenzo Salvatore offers marriage in exchange for protection and position, Marco knows it's a devil's bargain—but he's desperate enough to take it.

The arrangement is Marco provides the heir Vincenzo needs to secure his legacy. In return, he gets safety, wealth, and a chance to prove his worth beyond his disgraced family name. No emotions. No complications. Just a transaction.

Until Marco's heat changes everything.

Suddenly, the calculated arrangement becomes something neither of them planned for. Marco discovers he's pregnant ahead of schedule—and that the ruthless Don has a tender side reserved only for him. But the organization isn't ready for an omega who challenges tradition, questions authority, and refuses to stay quietly in the background.

When rivals attack and bullets fly, Marco has to prove his worth by risking everything, or accept the protected role everyone expects him to play.

Vincenzo chose Marco for his mind. But keeping him will require trusting that an omega from a failed family can be the partner—and parent—the Salvatore legacy needs.

An Heir for the Don is a 50,000 word omegaverse mafia romance featuring heat scenes, mpreg, a possessive alpha who falls hard, an omega determined to prove himself, and a guaranteed HEA with an adorable baby. No cheating, no love triangles—just two men building a family against all odds.

200 pages, Kindle Edition

Published December 21, 2025

51 people are currently reading
2 people want to read

About the author

Marian Black

192 books9 followers

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5 stars
55 (41%)
4 stars
49 (37%)
3 stars
19 (14%)
2 stars
5 (3%)
1 star
4 (3%)
Displaying 1 - 8 of 8 reviews
Profile Image for Kelly Little.
15 reviews1 follower
December 31, 2025
A bit redundant but a good read

Over all, it scratched that itch for mafia non shifter omegaverse. Its a fast read and there's no real drama so its an easy read. That being said, it IS a bit redundant. Every time they had sex outside the heat they mentioned why he wasn't knotting, he asked him to "grab his ****" and has him "spilling over his fist"- it just lacked some creativity in the smut department, and the third act drama was over in a page and a half, so nothing was really built up or let down. If you want something mindless and easy, this is the book to read for sure. I enjoyed it, I just won't be rereading it.
Profile Image for Latty|The Creative .
212 reviews11 followers
February 4, 2026
Beautiful Made Family

A steady balance of action, mafia politics, family drama, and excitement. Still getting used to the Omgeaverse and I'm loving the dynamics along with the system structure and it was well represented. This is my second mafia book by this author and while the names improved, to have the Mc's last name as a first name for another vital character can be slightly niggling other than that I enjoyed this.
Profile Image for caffeinated.crystal .
552 reviews11 followers
January 4, 2026
A/B/O universe mafia story.

An aging alpha Don needs an heir. An omega forensic accountant who doesn't want to lose his autonomy. An agreement. A partnership. With maybe more.

Heat-mated and pregnant, there are haters and fans. Don Salvatore is down bad quick for Marco. Lots happens.

This read like omegaverse fanfic, and that is not a complaint. 3.75⭐️
Profile Image for Kristina Schmidlin.
389 reviews4 followers
January 20, 2026
Enjoyed the story but there is too much being repeated about building a family. probably could cut 15 pages if everything wasn't repetitive.
Profile Image for Em.
321 reviews11 followers
January 23, 2026
Written by AI, no one publishes 120+ books in a matter of weeks.
Profile Image for Shelia.
718 reviews5 followers
February 7, 2026
Good read

This was fun to read. Plenty of heat and action that leads to a hard fought HEA and a little Heir to carry on the family.
Displaying 1 - 8 of 8 reviews

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