Although the title suggests this is just a review of Atonement (and is biased towards it), this is really a review of the three Voyager novels The Protectors, Acts of Contrition and Atonement which essentially make up a single story.
As a warning, this book (and by extension this review) contains heavy spoilers for the Destiny series, and the earlier Voyager relaunch stories (Full Circle to Eternal Tide).
At its core, there are two stories going on simultaneously, one in the Federation and one with the Full Circle fleet in the delta quadrant. Plot-wise they have nothing to do with each other and could have happily existed in separate works. Despite this, they do work well together solely because of the complicated relationships between all the characters – partly the existing ones between the characters we all know, but also significantly with the new ones introduced. Characters’ actions were frequently motivated by their relationship with those in the ‘other’ story so this structure helped emphasize this in a way that would have been lost had they been separate.
The Federation storyline deals with unexpected fallout from the destruction of the Borg. Seven of Nine and Tom Paris leave the Full Circle fleet to help with this in a story centred around the ethics and morality of the Federation trying to rebuild too quickly. Both Seven and Tom have to deal with the fact that they’ve spent years with a crew who respect and trust them, but now have to face an outside world that doesn’t. After all, Seven is not only a former Borg drone, but also one of only a handful that didn’t join the Caeliar gestalt; while Tom is still regarded as rebellious (and only kept in Starfleet due to Janeway’s influence) as well as reckless because of his handling of the situation with his daughter in Unworthy.
Described broadly, this idea of characters redeeming themselves, and being better than they appear is a common plot for Star Trek. But it is also one that works well, especially because of the complex interactions with the secondary characters (The Doctor, Axum, Samantha Wildman, Icheb and Admiral Akaar all feature to varying degrees).
The Full Circle fleet storyline also follows another typical plot found in Star Trek: how the Federation deals with large powers that don’t quite match their ideals, and specifically what happens if they try to subject a member of the Federation to their own idea of justice. Unfortunately, the ultimate resolution to this ends up a bit weak, but as consolation it leaves the door open for more in the future.
Constantly switching between the two plots is a little frustrating at times, but only because each one is so engrossing. During it all, the new characters in the Full Circle fleet get enough time to get some depth and feel important (and in some cases like Liam O’Donnell, to stop feeling like one-dimensional caricatures). This didn’t blow me away like some have (like DTI: Watching the Clock or the Mirror Universe series), but it’s better than most other recent novels and is definitely the best of the Voyager relaunch and worth reading if you have any interest in Voyager. Although you should probably start at Full Circle and read them all.