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Book 4 in  Series

Bookish and proper Percival Tunstell finds himself out of his depth when floating cities, spirited plumbing, and soggy biscuits collide in this delightful conclusion to New York Times bestselling author Gail Carriger’s Custard Protocol series.

Percy is off to Japan, but will Japan survive Percy?

Percival Tunstell loves that his sister and friends are building themselves a family of misfits aboard their airship, the Spotted Custard. Of course, he’d never admit that he belongs among them.

Percy has always been on the outside – dispassionate, aloof, and hatless.

But accidental spies, a trip to Japan, and one smart and beautiful doctor may have him renegotiating his whole philosophy on life. Except hats.

He’s done with hats. Thank you very much.

Author Note:

Yes Gentle Reader, Reticence is the final book in the Custard Protocol series. It takes place after events in Competence and contemporaneous with those in How to Marry a Werewolf.

The Spotted Custard crew is back for one last rollicking adventure! Watch me tie up all those loose threads. Look out for appearances from beloved Parasolverse characters (and some less beloved) and learn everyone’s secrets… the hard way.

Percy, of course, could care less.

Or could he?

This one is absolutely and utterly for YOU, Gentle Reader. Hopefully, you’ll be as caught up as possible by the time this book releases. I’m giving you fair warning.

This book is mad cap fun and absolutely hilarious no matter what. But you’ll get all the inside jokes and cookies only if you’ve read the Parasolverse back catalogue.

Gear up, you’re in for a particularly puffy final float!

You have been warned.

While you wait, it’s a good idea to get caught up on both the Finishing School and Parasol Protectorate series and tie in novellas.

Are you outside the USA / Canada?

PREORDER Available!

Amazon UK Digital & Print | DE | FR | AU 

Kobo & Book Depository are coming.

Can’t find it? However you got Competence you should be able to get Reticence.

For print, your local bookstore should be able to get it for you, ask them to: “Order it from Ingram.”

If you’d like a signed/personalized copy of the USA print edition or the AUDIOBOOK ON CD please email Borderlands using the SIGNED button to the left. They will ship anywhere in the world.

This book has a different cover overseas. Here’s why.

Concerned about anything to do with the two different editions? Gail did a video for you!


“This charming conclusion to the Custard Protocol steampunk series (following 2018’s Competence) sees the unorthodox crew of the good airship Spotted Custard taking on a new ship’s doctor before setting forth for Japan to investigate rumors of unknown shapeshifters.”

~ Publisher’s Weekly

“Carriger’s prose is playful and droll, with frequent laugh-worthy moments, tongue-in-cheek humor, and sparkling repartee.”

~ Publisher’s Weekly

Check out the Custard Protocol Pinterest board for Gail’s visual inspiration.

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