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When a mission in New York City goes terribly wrong, Sienna Nealon finds herself replaced as head of the government agency in charge of policing people with powers beyond those of a normal human. Marginalized, humiliated, she ponders her place in the world now that her war is over. But it isn't long before another threat rears its ugly head, and Sienna finds herself outmatched and outgunned – against former prisoners bent on executing a scheme which will push Sienna past limits of ruthlessness even she could not imagine.

295 pages, Kindle Edition

First published March 10, 2015

1013 people are currently reading
540 people want to read

About the author

Robert J. Crane

175 books1,169 followers
Robert J. Crane was born and raised on Florida's Space Coast before moving to the upper midwest in search of cooler climates and more palatable beer. He graduated from the University of Central Florida with a degree in English Creative Writing. He worked for a year as a substitute teacher and worked in the financial services field for seven years while writing in his spare time.

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5 stars
1,412 (57%)
4 stars
773 (31%)
3 stars
238 (9%)
2 stars
31 (1%)
1 star
6 (<1%)
Displaying 1 - 30 of 52 reviews
921 reviews11 followers
June 9, 2019
Back to being a 5star!

I was worried when reading the first two books of this next part of Sienna's life because the storyline just didn't come close to that of The Girl In the Box, at least for me. But, this brought back not only the badassery of Sienna, but her creative dialogue between herself and the people in her head. It brought back the familiar banter between the characters involved! I loved the first series and now am looking forward to book four!
Profile Image for ✰♥✰ ↠Dominique↞ ✰♥✰ .
270 reviews5 followers
November 24, 2020
I'd forgotten how badass Sienna actually is!!

Last i've read a book from this series was back in 2015. And i'm so happy i picked this series back up - i remember why it's part of my favourites.

I love the Sienna and Reed relationship ; he's pretty cool himself, but Sienna is the leader of that dynamic duo and i'm loving the feel of a woman in charge, and of a strong man intelligent enough to accept when i woman is strong enough to lead.

It being 5 years since i read the last book did have it's drawback ; i found myself forgetting about a lot of details that are pretty important, as in ; what's up with Scott? What happened between him and Sienna. Did he forget some things about their past relationship? Where's Siennas mother? Did she kill her? I can't seem to remember, and i sure am not going to pick all these books back up to find out what happened 😅 haha - so if anyone reading this could help me out ; that would be really appreciated.

The writting is always excellent with this author, and like i said earlier; really happy i picked it back up, i'll be reading the next one soon for sure!
Profile Image for doreen.
1,033 reviews3 followers
October 23, 2018
the soap opera continues...... Sienna finally gets a dog.... kills people without remorse. Its not even worth trying to remember the names because a few chapters later their dead. If you have read the previous books this is the same thing.
Profile Image for Tijuana.
51 reviews1 follower
August 17, 2019
Loved it

I think by taking away the powers have me a sense of what sienna can really do. And her not being in charge gives her the freedom to duck shit up and what are they gonna do fire her???? Bahahabahaa NEVER!
Profile Image for Ann E Hoover.
50 reviews
April 13, 2020
Sienna takes no names

Four Russian metas take hostages during a party at the compound. Sienna proceeds to do what she does best and adds to her kill count. Nice addition to the series.
203 reviews
June 26, 2021
Enjoyable to have a story where Sienna has to fight without her powers. I would moan that it was so unrealistic but none of the series is particularly realistic. I enjoyed the dialogue and the story. The character of Simmons seems a little unfleshed out and underdeveloped but enjoyable nonetheless.
378 reviews
July 10, 2022
geez

I can’t believe they’re free again to cause more problems and issues. Although it makes sense that sienna’s past is catching up with her too. I don’t want to share too much but this is definitely a book that keeps you on the edge of your seat.
26 reviews
September 5, 2025
#13 was one of the most interesting!

So I've read the 13th Girl in the box 60 book series. It was one of the most interesting so far. Sienna is becoming more interesting as she grows. It's on to number 14.
Profile Image for Lyn Ducich.
34 reviews
March 24, 2017
YES!

Best one yet!!!
Can't wait to get into the next book, and see what she gets up to.
Buying it now!
Profile Image for Mark and Lisa.
36 reviews
July 11, 2017
Out of the box #3

Liked it alright not as great as the others but good nonetheless. Hoping the next one is better. Thanks bunches
11 reviews
August 29, 2018
Love all the action going on in these books! The plot twists and turns and just keeps you entranced! There is a surprise that if you've read the series you will absolutely love!
Profile Image for Jackie Dowson.
43 reviews
March 25, 2019
Sienna has a dog ..then she flies off again ..this one is good and keeps your interest but it's a bit same( ISH ) .
395 reviews7 followers
June 19, 2019
Ruthless

One of the best stories of all this series I have read. Lots of action, mystery and revealing information. Hard to beat in future books of the series.
Profile Image for Lea Kane.
206 reviews2 followers
January 2, 2020
Sienna foils a bank robbery planned by "the brain" Cassidy, who later hires 4 Russian metas to kill Sienna & rescue a prisoner from the robbery. I really liked this one.
138 reviews
January 20, 2020
Have enjoyed every one of this series so far but have been ready them one after the other so taking a break, wouldn't want to get bored with them (and there appear to be loads more!)
1 review1 follower
February 9, 2020
Love the stories

I have been following this series for a few years. I love the action and dispense in all the stories.
5 reviews
June 5, 2020
Great

As always, great reading. And as always never let down. Can’t wait to read next book of series to see what follows
Profile Image for Denise Jonhson.
79 reviews
December 14, 2020
Good read

I really an enjoying this series. It does keep me wondering how she is going to get out of some of this situations
1 review
April 9, 2021
One of the best in the series.

Big action and back to our quirky superhero...really an enjoyable book. What’s not to love in a book full of great characters.
299 reviews4 followers
February 26, 2023
Amazing series

Loads of action, suspense, intrigue, character building and plots within plots. Amazing series if you enjoy being on the edge of your seat the whole time!
Profile Image for Emily.
37 reviews1 follower
March 9, 2024
Not bad!

The usual fare, from this author. A good ol’ action romp, a bit Die Hard-esque. Fun read! I promised a friend I would read all of these, so I’m in it for a while yet 😅
14 reviews
September 19, 2023
Again, exciting series! Most of the time, as an avid reader, I wouldn’t of picked this genre of books but I can’t stop reading! Highly recommend!
22 reviews
December 5, 2025
We are SO back. I was hesitant to start this because I really didn't enjoy #12, but this took me right back to the core of what the series is about: Sienna being a badass and fighting overwhelming odds. This has got me reinvested in the series after the change from Girl in The Box (1-10) to Out of The Box.
Profile Image for Stephanie Waterhouse.
249 reviews3 followers
March 23, 2015
Opening the book learning about four metahumans having been in prison for thirty years in a Russian cell without seeing the light of day or being without chains sparked my attention and got me thinking about the possible plotline to this book. Great start.

I hated the politics in this book and was angry quite a bit reading. I wanted Sienna to seek revenge for the things that appeared to me as unnecessary harassment and belittling of my girl. I admired her constraint. I was rooting for Sienna to quit and let the agency deal with the evil that was to come on their own...serve them right and maybe teach them a lesson and take the smugness out of them. Yeah, right...politicians will always be vial, self serving and uninterested in the needs of the public...as long as things are "perceived" in a good light for them. I'm still bitter as to what was done to Sienna by the government in this election year!

Sienna had to deal with another metahuman, who hates her and once again plotting her demise while also having to take a back seat in her agency controlling the metahumans. Good to see Reed working beside her. Did I see Scott? J.J. is becoming a special member of the "team". The "voices" in her head, to me, were giving sound advice. Appreciate how they all work together helping Sienna see a more comprehensive view of life, especially in her demanding capacity as leader, protector.

Another good book in this Out of The Box series. Recommend it. Will have to wait until June when the next book is to be released. Can't wait...love me some Sienna.
Profile Image for Donna.
1,750 reviews1 follower
February 5, 2016
It was great to see that Sienna is able to overcome the baddies even if her meta powers are neutralized. She apparently followed up on her resolution to stay in fighting condition after her confessed lapse in the previous book. All of her training comes into play and she owes a great deal of credit to the mentor she murdered. She might be even more of a powerhouse had she assimilated him instead of gunning him down.

The newly released Soviet prisoner's characters really aren't developed as much as they could have been. We do discover what meta power each of them has and that's about it. Earthquake boy's girlfriend is the brains of the operation. We still don't find out much about her but we do know that her plan to get him out of jail worked. The other four were expendable.

Obviously she and earthquake boy will make an appearance in the future.

This entire review has been hidden because of spoilers.
Profile Image for Helen.
32 reviews
April 9, 2015
Yet another ace story about Sienna. I liked that she was still able to do what she needed to do by simply relying on all the military training she had undergone. Truly highlighting just what a lethal weapon she actually is. Nice that the good doctor, now brother Reed's girlfriend has not relinquished any of her distate toward Sienna, but does do the medic thing when she has to. Also interesting to have the lovely Ariadne in a twist in the tale. The whole story bounced along famously until I turned the page and learnt there was nothing more. It crept up on me by surprise and was definatley a "NO!" moment. Nice cliff hanger Robert lol. Now can't wait for book 4
Profile Image for Cee Enzo Diaz.
163 reviews37 followers
December 7, 2015
If you read the prequel series "The Girl in the Box" this book will seem awfully familiar to Book #6 "Broken". While the motivation in both books are different (one features self defense and the other features revenge) they both show Sienna doing what she does best: taking lives and kicking ass. As a middle book in a long series "Ruthless" serves to further develop Sienna's character and helps to endear her to you. My only real critique is that this novel is like one big action flick, lots of action and effects but no real movement in the time frame of Sienna's life, the bulk of the tale covers one night. And although alot happens in that one night, it still ends up feeling like a filler.
Profile Image for Kimberly Austin.
10 reviews
March 29, 2015
I hurried forward and looked into the room to my left. It was a chemistry lab with a sweeping view of the snowy terrain outside, complete with large black islands in the middle of the room, independent sinks with an eyewash and a shower in the corner, silver fixtures with gas taps to run experiments with fire—
Hrmm.
Hmmmmmmmmm.
Hehehehehe.



I could not stop laughing my a$$ off when I read this. This book is amazing. Sienna Nealon is amazing. And most of all, Robert J. Crane is amazing for creating this incredible universe a person can get lost in for a few hours when reading it.
Displaying 1 - 30 of 52 reviews

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