This opens with how Tannis met Rico. It had been hinted at, but it was good to read about her background. Their first meeting explains so much of their friendship. More about the Church, the Council, Meridian, Trakis Seven, Trakis One. Callum's character was an interesting one. He started out as an asshole, I didn't like him, but gradually eventually I did. Tannis and Callum have a bit of a slow burn romance (if you count about a week). There are new characters in this one and the death of 2. I'm enjoying this series. I like how each is about a couple, but there is a huge underlying story-line the connects each book. I also love how the characters are in each one. Think Firefly. This is a chosen family.