Biker Salvation by Ellie R Hunter

The Lost Souls motorcycle club have been though hell over the last few months. Brothers have been taken, some have not returned home, and some must live with the memories of the violence that will haunt them forever. With their enemies firmly in the ground, it’s personal demons who come for the brothers now.
Cas has to deal with the reappearance of the mother he never knew, and Dex has to learn how to live with Melissa’s ghost tormenting him.

After Dex saved Cas’s life, the two should be closer than ever, however, the two pull apart and it has catastrophic consequences.