Steel Rush by P.T. Michelle

Cass has spent years trying to forget her past. But the thing about pasts…they always come back around, sometimes in the most unexpected ways. When Celeste goes missing, Cass discovers how intricately entangled her past and present are with Celeste’s, making it impossible to walk away.

In an effort to ignore his own painful history, Calder challenges a corrupt, underground organization, but his mission gets sidelined when Cass’s life becomes endangered.

The passion simmering between Calder and Cass tempts them to share their darkest secrets, but can their trust in each other help them unravel the mystery surrounding Celeste? Can they eliminate the threat to Cass before the past overshadows the present and destroys their intense connection?