Murder. On the Moon.
The aliens in charge need the best to solve this case, so they call in Greyson and Rachel.
The victim? Utterly perfect in every way, but there's a hitch.
Is she even human?
The Hunter Bureau, a series about a cop working in a world fifteen years after aliens make first contact, and bring all their troubles to a world that already had plenty of its own. Be sure to read the other novels in the series, available at all reputable outlets, and a few disreputable ones.