Pleasure Model — Blaze Ward

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.