Sign-In
Cart
Serendipity Sellers Case 04: Of Masks and Monsters: Everybody is wearing a mask. The question is who's underneath.
Paperback
Series: The Hollow Places, Book 4
Publisher: Independently Published
Published: Jun 8 2026
Pages: 120
Weight: 0.29
Height: 0.25 Width: 5.25 Depth: 8.00
Language: English
Serendipity Sellers was supposed to be attending a comic convention.
Instead, she accidentally broke the internet.
When a panel discussion turns into an unexpectedly public revelation about her relationship with the extradimensional entity known only as the nothing man, Ser finds herself at the center of a media firestorm, conspiracy theories, and more attention than she has ever wanted.
As thousands of fans descend on San Diego for a weekend of costumes, fandom, and celebration, someone else is watching from behind the scenes. Someone wealthy, powerful, and obsessed with the impossible.
Everett Cain has spent his life turning anomalies into assets.
Now he has found Ser.
With a convention full of witnesses, a trio of cryptid-podcast enthusiasts determined to help their favorite new superhero, friends struggling to keep up, and the nothing man learning what it means to protect someone in a world that now knows he exists, Ser finds herself caught between curiosity and obsession, fame and surveillance, love and ownership.
Because some monsters wear masks.
And some wear suits.
Darkly funny, emotionally sharp, and packed with mystery, fandom culture, and supernatural suspense, Of Masks and Monsters is the fourth installment in The Hollow Places series.
Perfect for fans of The X-Files, Supernatural, The Dresden Files, and stories that ask what happens when the real monster isn't the thing in the dark, it's the person trying to control it.
Also from
Sellers, Serendipity
Georgie & Bug and the Noisy Barn: A Story About Listening Before Reacting
Sellers, Serendipity
Toney, Hannah R.
Paperback
Serendipity Sellers Case 01: On Monsters and the Missing: Some Truths Attract Unwanted Attention
Sellers, Serendipity
Paperback
Serendipity Sellers Case 05: Echoes and Ashes: Some things don't stay buried. Some things don't stay whole.
Sellers, Serendipity
Paperback
Georgie & Bug and the Chickens That Charged: A Story About Pausing, Checking, and Breathing
Toney, Hannah R.
Sellers, Serendipity
Paperback
Serendipity Sellers Case 03: Misunderstood Monsters: Everyone thinks the monster is the problem, but the real monsters are usually human.
Sellers, Serendipity
Paperback
Also in
Mystery & Thriller
Coffin Road: An Utterly Gripping Crime Thriller from the Author of the China Thrillers
May, Peter
Paperback
Sabine's Notebook: In Which the Extraordinary Correspondence of Griffin & Sabine Continues
Bantock, Nick
Hardcover
The Girl with the Dragon Tattoo (Movie Tie-In Edition): Book 1 of the Millennium Trilogy
Larsson, Stieg
Paperback
The Golden Mean: In Which the Extraordinary Correspondence of Griffin & Sabine Concludes
Bantock, Nick
Hardcover
Big Little Truths: Reese's Book Club: A Novel: The Sequel to Big Little Lies
Moriarty, Liane
Hardcover
The Pirate Queen: A Novel from the New York Times Bestselling Author of the Frozen River
Lawhon, Ariel
Hardcover
The Altar of Pergamon: The Mystery of the Dark Angel and the Future of the World
Cahn, Jonathan
Hardcover