This Gulf of Time and Stars

To save their world,
the most powerful of the Om'ray left their homes. They left behind all
memory of their past. Calling themselves the Clan, they settled among
Humanity, hiding in plain sight, using their ability to slip past normal
space to travel where they wished, using their ability to control minds
to ensure their place and security. 

They are no longer hidden. 

For the Clan face a crisis. Their reproduction is tied to individual
power, and their latest generation of females, Choosers, are too strong
to safely mate. Their attempt to force others to help failed until Sira
di Sarc, their leader and the most.