book cover of Unbreakable Thread
 

Unbreakable Thread

(2026)
(A book in the Unbreakable Thread series)
A novel by

 
 
Rainey Collins thought she knew who she was—until the lies and secrets of her past began to unravel everything. Now she’s barely holding herself together, haunted by memories she can’t escape and convinced that the one man she loves will only suffer because of her. Pushing Max away feels like the only way to protect him.




Max Cano never wanted the spotlight, but his rising boxing career has other plans. Pulled between the demands of fame and the life he actually wants, he struggles to keep his footing—but losing Rainey is the one thing he refuses to accept. He won’t give up on her. On them.




But when someone they both trusted turns out to be their greatest threat, everything changes. Rainey finds herself trapped in a world she never saw coming, and Max has one mission—keep her safe. Through betrayal, heartbreak, and everything stacked against them, one thing remains: they have always had each other’s backs. This time is no different.




Unbreakable Thread is the second book in the Invisible String duet, part of The Underground Series.




Author Note:


Unbreakable Thread MUST be read in order. This book is a continuation of Invisible String.




Read in order


(Invisible String & Unbreakable Thread are a Duet)

Book 1: Invisible String


Book 2: Unbreakable Thread


Book 3: Coming soon



Genre: Romance

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