Billionaires Underground: Similar romance series

Nevada Baylor Trilogy

by Ilona Andrews

4.44 · 159 ratings

urban-fantasy · north-america · book · romance · alpha-mc · contemporary · audiobook · billionaire · suspense · paranormal · fantasy · action-adventure · fiction · humor · mystery · female-mc · urban · witches-wizards · family · slow-burn

All books in this series ❯

The Forge Trilogy

by Meghan March

4.29 · 72 ratings

female-mc · marriage-of-convenience · arranged-marriage · enemies-to-lovers · marriage · fake-relationship · suspense · alpha-mc · anti-hero · billionaire · contemporary · audiobook · multi-pov · kidnapping · book · steamy · organized-crime · revenge · romance · angst

All books in this series ❯

Ruthless People

by J.J. McAvoy

4.23 · 114 ratings

humor · mystery · suspense · contemporary · multi-pov · alpha-mc · organized-crime · romance · book · steamy · dark · new-adult · adult · crime · drama · female-mc · fiction · action-adventure · marriage · arranged-marriage

All books in this series ❯

Buttons

by Penelope Sky

4.42 · 120 ratings

fiction · crime · adult · dark · new-adult · abuse · book · steamy · organized-crime · romance · alpha-mc · audiobook · contemporary · suspense · action-adventure · billionaire · angst · kidnapping · anti-hero · enemies-to-lovers

All books in this series ❯

Beautiful Mess

by T.K. Leigh

4.12 · 74 ratings

military · dark · new-adult · female-mc · action-adventure · mystery · fiction · crime · contemporary · billionaire · suspense · romance · book · steamy · second-chances · adult · audiobook · alpha-mc · drama · angst

All books in this series ❯

Everything I Left Unsaid

by Molly O'Keefe

3.89 · 68 ratings

steamy · book · romance · angst · abuse · suspense · alpha-mc · contemporary · audiobook · multi-pov · drama · crime · fiction · female-mc · epic · new-adult · adult · billionaire · family · biker

All books in this series ❯

Rook and Ronin Spinoff

by J.A. Huss

4.50 · 58 ratings

fiction · new-adult · adult · steamy · romance · suspense · audiobook · contemporary · billionaire · drama · action-adventure · book · alpha-mc · womens-fiction · crime · humor · mystery · female-mc · biker · dark

All books in this series ❯

Wolf

by Penelope Sky

4.20 · 54 ratings

adult · crime · fiction · domestic-drama · marriage-of-convenience · arranged-marriage · enemies-to-lovers · cheating · suspense · contemporary · billionaire · book · organized-crime · romance · dark · new-adult · age-gap · marriage · alpha-mc · anti-hero

All books in this series ❯

Professionals

by Jessica Gadziala

4.24 · 119 ratings

alpha-mc · crime · fiction · adult · romance · book · suspense · contemporary · steamy · mystery · dark · multi-pov · womens-fiction · action-adventure · military · friends-to-lovers · organized-crime · slow-burn · war · female-mc

All books in this series ❯

In the Shadows

by P.T. Michelle

4.38 · 130 ratings

romance · contemporary · billionaire · suspense · action-adventure · fiction · book · steamy · audiobook · female-mc · adult · crime · psychological · alpha-mc · mystery · military · dark · humor · new-adult · abuse

All books in this series ❯

The O'Malleys

by Katee Robert

3.91 · 90 ratings

crime · contemporary · suspense · organized-crime · romance · book · adult · female-mc · fiction · family · audiobook · multi-pov · alpha-mc · enemies-to-lovers · steamy · dark · billionaire · mystery · drama · new-adult

All books in this series ❯

Risky Business

by Tiffany Snow

4.11 · 38 ratings

boss-employee · organized-crime · crime · book · steamy · romance · love-triangle · fiction · action-adventure · mystery · suspense · new-adult · law-enforcement · billionaire · audiobook · contemporary · adult · female-mc · domestic-drama · cheating

All books in this series ❯

Belluci Mafia

by Nicole Fox

4.24 · 38 ratings

fiction · action-adventure · mystery · new-adult · vigilante · female-mc · crime · book · literary-fiction · steamy · justice · organized-crime · romance · adult · billionaire · audiobook · contemporary · enemies-to-lovers · suspense · dark

All books in this series ❯

The Blyss Trilogy

by J.C. Cliff

4.00 · 50 ratings

fiction · crime · dark · book · steamy · contemporary · alpha-mc · suspense · love-triangle · action-adventure · mystery · drama · military · adult · new-adult · abuse · captivity · romance · kidnapping · multi-pov

All books in this series ❯

North Security

by Skye Warren

4.06 · 62 ratings

dark · fiction · contemporary · audiobook · romance · steamy · military · adult · new-adult · action-adventure · age-gap · multi-pov · suspense · mystery · forbidden-love · billionaire · alpha-mc · angst · book · sexual-assault

All books in this series ❯

Savage Men

by Clarissa Wild

3.77 · 48 ratings

dark · book · steamy · romance · alpha-mc · contemporary · suspense · fiction · action-adventure · adult · military · new-adult · shapeshifters · paranormal · mystery · captivity · billionaire · multi-pov · enemies-to-lovers · female-mc

All books in this series ❯

Lion Security

by Scarlett Dawn

4.08 · 36 ratings

new-adult · suspense · alpha-mc · adult · contemporary · billionaire · steamy · book · crime · organized-crime · age-gap · romance · action-adventure · fiction · humor · mystery · female-mc · assassins · dark · political-intrigue

All books in this series ❯

Redemption Harbor

by Katie Reus

4.28 · 58 ratings

adult · violent-conflict · military · war · fiction · action-adventure · suspense · alpha-mc · audiobook · contemporary · romance · crime · book · mystery · political-intrigue · assassins · dark · bodyguard · law-enforcement · female-mc

All books in this series ❯

Taken

by Logan Chance

3.98 · 58 ratings

adult · fiction · suspense · contemporary · book · dark · crime · female-mc · billionaire · multi-pov · kidnapping · steamy · organized-crime · romance · new-adult · mystery · enemies-to-lovers · drama · action-adventure · poc-mc

All books in this series ❯

A Singular Obsession

by Lucy Leroux

3.89 · 70 ratings

new-adult · fiction · female-mc · suspense · contemporary · steamy · romance · epic · dark · adult · crime · action-adventure · alpha-mc · book · billionaire · kidnapping · insta-love · forbidden-love · age-gap · multi-pov

All books in this series ❯

Broken Cross

by Bri Blackwood

4.11 · 44 ratings

adult · organized-crime · alpha-mc · romance · contemporary · enemies-to-lovers · suspense · fiction · crime · book · billionaire · new-adult · action-adventure · female-mc · gothic · multi-pov · dark · mystery · psychological · steamy

All books in this series ❯

The Enemies Trilogy

by Piper Lawson

4.31 · 32 ratings

fiction · action-adventure · female-mc · urban · age-gap · adult · new-adult · book · steamy · romance · alpha-mc · billionaire · contemporary · enemies-to-lovers · suspense · poc-mc · drama · holidays · angst · multi-pov

All books in this series ❯