Reign by Lydia Goodfellow

A BRUTAL REJECTION…
Abandoned by her seductive but infuriatingly elusive protector, Heidi Adams once again finds herself back in Horn Hill, discarded on the doorstep of her childhood home and at the mercy of the man who failed to protect her from her worst nightmares all those years ago.
But even as she struggles to regroup and lick her fresh wounds, the monsters from her past have caught her scent and they’re coming for her…

A HAUNTING CONCLUSION…
Running for her life, Heidi’s only hope is Milton—the one man who forsake her, and who is still determined to withstand her at all costs. But the further Heidi delves into his dangerous, fucked-up web of desire, the more Milton’s control begins to slip.
As the lines between madness and sanity become blurred, Milton risks crossing every line to prove he can live without her. And as the shadow of her past fast approaches, maybe he just might have to…

Reign is book eight in the Club XXX series and the second book in Milton’s series. It should be read after Worship.