Harmonizer’s Evolution (Book four of the Balancer’s Soul cycle) - The Balancer's Cycle, #4

After learnimg that the cause of their unique situation is Connor's odd parentage as a child of the Hallowed Mother life went on. The next obstacle Connor and Sarah must face is parenthood and they have more to deal with than human parents, but as always they do things together and will find a way to manage. But an uncertain future will jeopardize everything. Sorono gets kidnapped and imprisoned. Both Mark and Connor fly to try and rescue him, but after they find him he reveals a plot that will change the entire world, one way or another.