CASSIE ALEXANDER · MONSTER SECURITY AGENCY

He’ll keep the light on.

Very dangerous bodyguards. Very inconvenient feelings.

Meet your Nightmare

A little fantasy. A real book to fall into.

MONSTERS WITH A PROTECTIVE STREAK.

Monster Security Agency

Lethal bodyguards. Human heroines. The very inconvenient business of falling in love. Find your next monster romance by Cassie Alexander—or bring a few home together.

ROOM FOR MORE THAN ONE MONSTER

Bring them home together.

Compare the collections and see exactly what comes in each box.

FOR YOUR BEDSIDE TABLE

Paperbacks & special editions

Choose your monster, then take a closer look at the edition.

LET A MONSTER KEEP YOU COMPANY

Your next late-night listen

Spider. Kraken. Nightmare. Krampus. Choose the voice in your ear.

A LITTLE SOMETHING EXTRA

More to discover

Explore Subway Silk in ebook or audio.

OFF DUTY. STILL OBSESSED.

Agency gear

Totes, cozy layers, and a little evidence of your monster-boyfriend problem.

Before you choose your monster

What kind of books are these?

Monster Security Agency pairs human heroines with dangerous, nonhuman protectors. These are steamy monster romances with action, attraction, and bodyguards whose feelings complicate the job. Check each book’s description and content warnings to find your fit.

What comes in a bundle?

Each bundle has its own contents and edition details. Open the bundle listing to see the books and extras included before choosing.

Looking for a translated edition?

This page presents the English editions. Visit international editions to shop in your language, including Czech.

Need a hand? cassie@cassiealexander.com