Unseen Underground: Similar romance series

The Dark Duet

by C.J. Roberts

4.04 · 110 ratings

fiction · suspense · contemporary · alpha-mc · organized-crime · romance · captivity · book · steamy · kidnapping · abuse · angst · dark · new-adult · slavery · age-gap · forbidden-love · crime · enemies-to-lovers · audiobook

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Deception Trilogy

by Rina Kent

4.05 · 95 ratings

age-gap · alpha-mc · contemporary · enemies-to-lovers · arranged-marriage · marriage-of-convenience · suspense · marriage · angst · book · steamy · organized-crime · romance · adult · dark · new-adult · mystery · fiction · crime · audiobook

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Sinners

by Michelle Heard

4.04 · 117 ratings

new-adult · angst · steamy · book · organized-crime · forced-proximity · romance · alpha-mc · billionaire · contemporary · multi-pov · enemies-to-lovers · fiction · crime · age-gap · adult · dark · abuse · cheerful-mc · grumpy-sunshine

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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

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Beauty in Lies

by Adelaide Forrest

4.00 · 78 ratings

anti-hero · billionaire · contemporary · alpha-mc · suspense · stalking · organized-crime · romance · kidnapping · book · steamy · adult · dark · insta-love · fiction · age-gap · crime · forced-proximity · multi-pov · arranged-marriage

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Goddess Isles

by Pepper Winters

4.27 · 107 ratings

alpha-mc · contemporary · audiobook · suspense · book · captivity · steamy · romance · adult · dark · fiction · age-gap · billionaire · kidnapping · organized-crime · female-mc · crime · anti-hero · multi-pov · enemies-to-lovers

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The Kings of Italy

by Mila Finelli

4.32 · 44 ratings

contemporary · steamy · adult · suspense · romance · fiction · organized-crime · age-gap · book · crime · forced-proximity · dark · arranged-marriage · enemies-to-lovers · mystery · captivity · kidnapping · multi-pov · anti-hero · billionaire

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Vegas Underground

by Renee Rose

4.14 · 88 ratings

adult · organized-crime · romance · dark · fiction · mystery · crime · alpha-mc · contemporary · steamy · poc-mc · audiobook · suspense · enemies-to-lovers · angst · book · age-gap · multi-pov · captivity · anthologies

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Mafia Wars

by Maggie Cole

4.42 · 144 ratings

organized-crime · romance · gothic · book · suspense · contemporary · crime · fiction · action-adventure · dark · adult · justice · outlaws · vigilante · age-gap · kidnapping · audiobook · alpha-mc · female-mc · epic

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The Rite Trilogy

by Natasha Knight

4.12 · 42 ratings

enemies-to-lovers · suspense · forced-proximity · alpha-mc · anti-hero · billionaire · contemporary · audiobook · multi-pov · steamy · captivity · organized-crime · romance · angst · abuse · dark · adult · crime · forbidden-love · age-gap

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Disciples

by Izzy Sweet

4.21 · 109 ratings

crime · fiction · adult · book · organized-crime · romance · suspense · contemporary · action-adventure · dark · kidnapping · steamy · anti-hero · female-mc · insta-love · angst · alpha-mc · mystery · military · enemies-to-lovers

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Belles & Mobsters

by Eva Winners

4.13 · 85 ratings

dark · adult · crime · fiction · suspense · billionaire · contemporary · organized-crime · romance · book · age-gap · poc-mc · enemies-to-lovers · alpha-mc · steamy · insta-love · arranged-marriage · marriage-of-convenience · female-mc · action-adventure

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Pageant

by Lilith Vincent

4.16 · 32 ratings

contemporary · crime · fiction · dark · new-adult · adult · polyamory · sexual-assault · reverse-harem · book · kidnapping · captivity · organized-crime · romance · revenge · abuse · billionaire · multi-pov · family · age-gap

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Deliver

by Pam Godwin

4.27 · 113 ratings

contemporary · fiction · dark · adult · romance · crime · steamy · organized-crime · suspense · audiobook · book · kidnapping · angst · captivity · alpha-mc · enemies-to-lovers · sexual-assault · abuse · action-adventure · mystery

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Brutal Reign

by Sasha Leone

4.09 · 46 ratings

young-adult · gothic · book · kidnapping · steamy · organized-crime · romance · contemporary · suspense · fiction · poc-mc · crime · heist · dark · enemies-to-lovers · new-adult · revenge · captivity · arranged-marriage · age-gap

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Beauty & The Beast

by Beena Khan

4.03 · 36 ratings

gothic · book · kidnapping · organized-crime · romance · myths · fiction · crime · adult · retellings · dark · steamy · contemporary · enemies-to-lovers · poc-mc · age-gap · historical-fiction · new-adult · revenge · abuse

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Molotov Betrothal

by Anna Zaires

4.07 · 27 ratings

organized-crime · adult · romance · book · suspense · contemporary · anti-hero · crime · fiction · new-adult · captivity · kidnapping · steamy · angst · arranged-marriage · marriage-of-convenience · enemies-to-lovers · alpha-mc · age-gap · dark

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Thorns of Omertà

by Eva Winners

4.31 · 61 ratings

romance · fiction · crime · book · organized-crime · adult · dark · contemporary · enemies-to-lovers · suspense · steamy · age-gap · forced-proximity · poc-mc · billionaire · secrets · forbidden-love · multi-pov · arranged-marriage · kidnapping

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Russo Saga

by Nicolina Martin

4.27 · 26 ratings

abuse · book · organized-crime · romance · alpha-mc · contemporary · suspense · fiction · crime · adult · dark · steamy · anti-hero · enemies-to-lovers · poc-mc · sad · age-gap · sexual-assault · mlm · new adult

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Vengeful Villains

by Kristen Luciani

4.28 · 18 ratings

enemies-to-lovers · suspense · adult · contemporary · book · crime · organized-crime · age-gap · captivity · fiction · revenge · arranged-marriage · dark · alpha-mc · forced-proximity · steamy · poc-mc · romance · stalking · dogs

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