Four Horsemen · 2021
CorrodeSpice level, tropes & is it dark romance?
by Sarah Bailey
Spice 4/5 (Explicit) · Darkness 5/5 (No light) · 13 trigger warnings flagged
Sarah Bailey published Corrode in 2021. It is book 3 of Four Horsemen. Expect why choose and enemies to lovers. We score it spice 4 (explicit) and darkness 5 (pitch black). The heaviest flags readers report are blood, murder, kidnapping. Our scores lean on what readers report, not on a full reread, so treat them as a guide. This note is ours. It is not a publisher blurb.
First published: 2021. Book 3 of Four Horsemen.
Corrode tropes
On this shelf, Corrode is filed under Why choose / reverse harem and Enemies to lovers. Each tag opens more books with that trope.
Corrode spice level
Is Corrode dark romance?
Yes, at the very dark end. Corrode scores 5 of 5 on our darkness scale (No light).
Spice and darkness are separate scores. More no light books. How we rate.
Corrode trigger warnings
Book-specific flags taken from reader-submitted content warnings on The StoryGraph (top flag reported by 19 readers), grouped by us. Also on that list: sexual content, injury/injury detail, panic attacks/disorders, infertility, death of parent, drug use, cursing, suicide, toxic relationship, body horror. See the reader-submitted list.
Graphic (13) — open before you read
Open this before you read. These are the flags most likely to be a hard stop.
Moderate (0)
Harm, control, or obsession that is common in this lane.
None flagged in this band.
Minor (0)
Present, and usually not the reason someone puts the book down.
None flagged in this band.
Four Horsemen reading order
Corrode is book 3 of 3 in Sarah Bailey's Four Horsemen series. Start with Chaos.
Order checked against the Goodreads Four Horsemen series page on 13 October 2026. The Four Horsemen series in order.
Who it's for
Shelf note written for this site. We do not copy reviews or publisher blurbs. Outbound links are search pages, not quoted ratings. Kindle Unlimited and endings are only flagged when we were willing to mark them. How we rate.
Missing a book? Suggest it.
Books like Corrode
Matched on shared tropes, then the closest spice and darkness scores. Other books in the same series are listed above, not here.
- Crucible
Crucible
B.B. Reid
Spice ●●●●○Dark ●●●●●
Shared: Enemies to lovers, Why choose / reverse harem
- Carnival Hill
Carnival Hill
Susanne Valenti, Caroline Peckham
Spice ●●●●○Dark ●●●●●
Shared: Enemies to lovers, Why choose / reverse harem
- Cataclysm
Cataclysm
Sarah Bailey
Spice ●●●●○Dark ●●●●●
Shared: Enemies to lovers, Why choose / reverse harem
- Shadows So Cruel
Shadows So Cruel
Liv Zander
Spice ●●●●○Dark ●●●●●
Shared: Enemies to lovers, Why choose / reverse harem
- Along for the Ride
Along for the Ride
Lauren Biel
Spice ●●●●○Dark ●●●●●
Shared: Why choose / reverse harem, Enemies to lovers
- Binding Rose
Binding Rose
Ivy Fox
Spice ●●●●○Dark ●●●●●
Shared: Enemies to lovers, Why choose / reverse harem
- Cage of Ice and Echoes
Cage of Ice and Echoes
Pam Godwin
Spice ●●●●○Dark ●●●●●
Shared: Why choose / reverse harem, Enemies to lovers
- Deceit
Deceit
Katelyn Taylor
Spice ●●●●○Dark ●●●●●
Shared: Enemies to lovers, Why choose / reverse harem
Books like Corrode, with a reason for each
Questions readers actually ask
What is the spice level of Corrode?
Corrode spice level is 4 of 5 (Explicit). On-page sex, clearly written. Darkness is a separate score: 5 of 5 (No light).
What are the Corrode trigger warnings?
Graphic: Blood, Murder, Kidnapping, Violence, Death, Abuse, Psychological abuse, Captivity, Torture, Grief, Gore, Stalking, Sexual assault. Moderate: none flagged. Minor: none flagged. These are book-specific flags reported by readers on reader-submitted content warnings on The StoryGraph (top flag reported by 19 readers), grouped by us. The author's own note may list more. Read it before you start.
Is Corrode dark romance?
Yes, at the very dark end. Corrode scores 5 of 5 on our darkness scale (No light). The book is not interested in pulling the punch.
What tropes are in Corrode?
On this shelf Corrode is filed under Why choose / reverse harem and Enemies to lovers.
Who is Corrode for?
Pick this up if you want why choose and enemies to lovers with explicit spice. Read the warnings first. Start earlier in Four Horsemen if you can.
What are some books like Corrode?
Matched on shared tropes and similar spice and darkness: Crucible by B.B. Reid; Carnival Hill by Susanne Valenti, Caroline Peckham; Cataclysm by Sarah Bailey; Shadows So Cruel by Liv Zander; Along for the Ride by Lauren Biel; Binding Rose by Ivy Fox. More read-alikes, each with a reason, are on zademasked.com/like/corrode.
Is Corrode a standalone?
No. Corrode is book 3 of 3 in the Four Horsemen series by Sarah Bailey. The series starts with Chaos.
What order should I read the Four Horsemen series in?
2. Chaos; 3. Corrode; 4. Cataclysm.
How many books are in the Four Horsemen series?
The Four Horsemen series by Sarah Bailey has 3 main books.
What is the Corrode age rating?
We'd say 18+. Spice sits at 4/5 (explicit) and darkness at 5/5 (no light). That's our recommendation, not an official rating, so read the trigger warnings as well.
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