Clockwork Princess: Infernal Devices, Book 3

Book review by
Karen Wirsing, Common Sense Media
Clockwork Princess: Infernal Devices, Book 3 Book Poster Image
Popular with kidsParents recommend
Enthralling trilogy conclusion tugs at the heartstrings.

Parents say

age 14+
Based on 5 reviews

Kids say

age 13+
Based on 25 reviews

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A lot or a little?

The parents' guide to what's in this book.

Educational Value

Introduces readers to the Victorian era. Also teaches kids about classic literature and poetry, with quotes from writers such as Lord Tennyson and Shakespeare. Gives insight to Mandarin folklore and the Welsh language.

Positive Messages

It's far better to have loved and lost than never to have loved at all. people should look beyond labels and see others for who they really are. Love comes in all shapes and colors; it's a universal language that conquers prejudices.

Positive Role Models & Representations

The men in Clockwork Pricesss model loyalty and commitment. And the female characters portray strength and independence.


Clockwork Princess includes many battle scenes. The Shadowhunters slay a giant worm, and an army of automatons destroys an entire village and all the people in it, along with a few of the major characters. People are stabbed, dismembered, and engage in fistfights.


Passionate kissing, and a 17-year-old couple has sex.


The word "idiot" is used several times.

Drinking, Drugs & Smoking

Jem must take a drug called Yin Fen to stay alive.

What parents need to know

Parents need to know that Clockwork Princess is more violent than the previous two installments in the Infernal Devices fantasy trilogy.  The Shadowhunters slay a giant worm, and an army of automatons destroys an entire village and all the people in it. People are stabbed, dismembered, and engage in fistfights. But, the most painful piece of this jigsaw puzzle is the three main characters' love triangle. There's passionate kissing, undressing, and a teen couple has sex.

User Reviews

  • Parents say
  • Kids say
Adult Written byCecilia U. February 21, 2017
I think for a 12 year old who is mature i would recommended .
Adult Written bypuppylover14 December 13, 2015


I think it's a really good book, with a lot of passion in it.
Teen, 17 years old Written byabbacus April 5, 2013

Wow, Wow, Wow!!!!!!

This book was so amazing!!! It was a spectacular conclusion to The Infernal Devices trilogy! I have never felt more satisfied with a final book in a series than... Continue reading
Teen, 13 years old Written by-shapeshifter13- November 19, 2016

5.5 out of 5 stars

The last line had me laughing out loud.

Amazing book, amazing series, amazing author. It's a must read.

I guess for mature 12 year olds???

What's the story?

CLOCKWORK PRINCESS is the final installment in the Infernal Devices trilogy. Tessa Gray, now 17 years old, is living in London with her adopted family of Shadowhunters. Not only is she continuing her path of self-discovery, but she is also engaged to the selfless and compassionate Jem. Regrettably, Jem is living with a fatal disease and his days are numbered. The couple decides to rush their wedding date so they can enjoy whatever time they have left together in wedlock. Plans go terribly awry when a carriage full of automatons pulls into the institute and kidnaps Tessa. The evil Magister will stop at nothing to use Tessa's shape-shifting powers for his own benefit. His objective: to eliminate all of the Shadowhunters in the world. Questions are finally answered in this concluding installment, along with the truth about why it's better to be mere mortal than to experience life everlasting.

Is it any good?

CLOCKWORK PRINCESS is a fantastic book that will pull at your heartstrings from beginning to end. The love triangle between Tessa, Jem, and Will becomes so painful at times that readers may want to send the book flying across the room. This just shows that Cassandra Clare is an enthralling storyteller whose readers will become emotionally invested in her plot and characters.

Clockwork Princess is wildly imaginative as it examines themes of marriage, family, dictatorship, and democracy. Characters grow to learn that true love is blind, sometimes your strongest family is the one you choose for yourself, and what happens to a society when citizens do not question their leader.

Talk to your kids about ...

  • Families can talk about the Infernal Devices trilogy. Are you satisfied by the conclusion? Why do you think fantasy series are so popular? 

  • Discuss the type of government that the Nephilim are. Which countries do you think they're modeled after? Does the Magister remind you of any existing or previous world leaders? If so, who?

  • What makes the main characters' love triangle so compelling yet so difficult to read about?

Book details

Our editors recommend

For kids who love fantasy and fangs

Themes & Topics

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