We thought this September was the perfect month to share our mystery and thriller products; after all, it's Agatha Christie’s birthday on the 15th of September! If you think all the bookish merch is made for Romantasy fans, you couldn’t be more wrong; we have a stunning collection of book boxes and bookish products just a click away!

We have so many thrilling products (I couldn’t resist the pun!) that I chose my top 3 from each category. Get ready to look mysterious, grow your TBR list, change your phone’s personality, and add a touch of mystery to your home decor!

 

Three Mystery Boxes Worth Investigating 

Christmas Box 2026: Yes, this year’s Christmas box features a mystery! We think you will love this sexy, light-hearted romp, with a dash of merriment and murder. This incredible box features Home for the Homicides by Elle Cosimano and Hannah Morrissey plus FIVE gloriously festive gifts you'll wish came down the chimney sooner! It's available for pre-order and is expected to ship in early December.

Murder in the Outback: Escape to the Australian outback in a gripping mystery where the environment is as perilous as the secrets waiting to be uncovered. Our “Murder in the Outback” box features No Good Deed by Katherine Kovacic plus FIVE gifts that bring this mystery to life!

Sinister Tabloids: In the 1930s, scandal, secret loves, and murder shatter a woman’s Hollywood dream. We think you’ll love this box, featuring a copy of Land of Dreams by Gian Sardar plus FOUR wrapped gifts to open as you read, bringing this stunning novel to life!

 

Our Top 3 Thriller Book Boxes

Thriller Mini Book Box 2026: Our mini book box experiences are perfect for those on-the-go moments, and this one will have you captivated from the first chilling line: "If you're reading this, I've gone missing." This exciting box features a paperback copy of If I Go Missing by Leslie Wolfe plus TWO beautifully wrapped gifts! 

OUABC Lite - Featuring The Unknown by Riley Sager: If you haven’t experienced our Lite book box, you’ve been missing out on one of the most immersive experiences to date. It’s an elevated book-only option with a twist—there are five envelopes with paper items that work to incorporate the five senses! This Lite Box features a stunning hardcover edition with designed endpapers, a foil-stamped case, hued edges, a shimmery jacket, and a signed tip-in from the author!

Thriller Mini Book Box 2024: Laurel Snow wouldn’t call hunting a serial killer a vacation, but with a pile of dead bodies unearthed near her Genesis Valley, WA, hometown, she’ll take what she can get. This mini book box features a copy of You Can Run by Rebecca Zanetti plus TWO adorably wrapped gifts!

 

Our Favorite Mystery and Thriller Phone Cases 

Murder on the Links: Agatha Christie fans, this one is for you. Inspired by Murder on the Links, this light orange argyle case features a black-and-white illustration of a golfer on the front, a black-and-orange spine, and a golf ball on the back. It’s finished with the wonderfully Poirot-worthy quote, “Arrange your ideas. Be methodical. Be orderly. There is the secret of success.” 

The Legend of Sleepy Hollow: Dark and just a little thrilling, The Legend of Sleepy Hollow phone case is made for readers who like their classics with an eerie twist. The gorgeous purple design features a spindly tree, striking black-and-white details, and the Headless Horseman cleverly worked into the title. Turn it over, and you’ll find a spiderweb alongside the haunting quote, “It breathed forth an atmosphere of dreams and fancies infecting all the land.” 

Edgar Allan Poe: Our exclusively designed phone case draws inspiration from The Complete Stories & Poems of Edgar Allan Poe. For anyone whose reading tastes lean deliciously dark, this Edgar Allan Poe-inspired case fits the mood perfectly. The gray and black design features Poe himself framed by ornate filigree on the front, while a raven perched among bare branches takes center stage on the back. Of course, it wouldn’t be Poe without a suitably unsettling quote: “Words have no power to impress the mind without the exquisite horrors of their reality.” 

 

Mysterious and Thrilling Home Decor Touches

Book-Shaped Ceramic Vase: Mysteries aren't just for the pages of your book. This gorgeous book-shaped ceramic vase was inspired by The Undoing of Violet Claybourne by Emily Critchley. We love the book title inscription, The Case of the Vanishing Violets, with the green and purple florals and gold details. Add a few flowers and pop it between your books for a little mystery hiding in plain sight.

Galaxy Knife: Murder in the kitchen, anyone? All kitchens deserve a slightly dramatic knife, and this one ticks all of the boxes! Inspired by the Dire Dagger in An Ancient Witch's Guide to Modern Dating by Cecilia Edward, this kitchen knife may look like something destined for a rather suspicious plot twist, but we promise it’s meant for chopping dinner!

Floral Skull Candle: We tend to think of candles as romance merch, but we decided we needed one with a darker side. This floral skull candle was inspired by How to Survive a Horror Story by Mallory Arnold and is exactly the sort of thing we want glowing beside us while we’re reading something we probably shouldn’t be reading alone at night.

 

Tools of the Amateur Sleuth

What the Actual Plot Twist Mug: We’ve all had that moment when a book suddenly makes us question everything we thought we knew. Inspired by My Lovely Wife by Samantha Downing, this mug features a skeleton casually reading beneath the words “What the Actual Plot Twist?” Fill it with your favorite reading drink and prepare yourself, because clearly something suspicious is about to happen.

True Crime Travel Mug: The ultimate true crime travel companion! Inspired by Asylum Hotel by Juliet Blackwood, this black travel mug reads, “I Like True Crime (and maybe 3 people).” It’s perfect for keeping your coffee close while you listen to a true crime podcast, solve your latest mystery, or sit back and take a moment to breathe between chapters.

Detective Notebook: Calling all amateur sleuths! We all need somewhere to record evidence, jot down wild theories, and collate suspect lists! This fabric-bound, lined pocket notebook has “Detective” printed across the cover and is just what you need!

 

Mystery Looks Good on You

Cloaked in Black Nail Polish: Nothing says mysterious quite like black nails! This gorgeous pure black nail polish was inspired by The Bridesmaid by Cate Quinn. We think it pairs particularly well with a thriller, a cup of coffee, and absolutely no plans to leave the house.

Weapon of Retribution Lipstick: We’re giving this one the prize for the most dramatic lipstick in your makeup bag. This lipstick comes disguised as a knife, complete with a coral shade designed to look like the bloody end of the blade. Slightly terrifying? Yes. Do we still want one? Also yes. You may want to leave this one at home when going through customs!

Oversized Sun Hat: We love being mysterious; right now I’m imagining myself in an oversized hat, with dramatic red lipstick and black nails. Simply loving it! This oversized beige-and-black sun hat was featured alongside An Inconvenient Wife by Karen E. Olson and is absolutely perfect for those dramatic, I-am-mysterious moments!

Mystery and Thriller Products at a Glance

 

The Case of the Growing Bookish To-Die For List

I was planning on choosing just a few of my favorites, but when it comes to our mystery/thriller collection, there are so many wonderful bookish products to choose from that I tend to get carried away. We would love to hear which ones you plan on adding to your cart.

Whether you prefer cozy mysteries that let you play detective, thrillers that keep you turning pages far later than you planned, or simply want to add a little intrigue to your everyday life, there’s plenty more waiting to be discovered in our Mystery Collection and Thriller Collection.

And with Agatha Christie’s birthday on September 15th, we really can’t think of a better excuse to embrace your inner sleuth. Pick a mystery, gather your clues, pour something into that suitably suspicious mug, and get reading. The only real mystery left to solve is which one you’re choosing first!

Keep Reading

If you’re already in the mood for darker reads, gothic accessories, and all things delightfully eerie, head over to The Complete Guide to the OUABC Halloween Collection for a closer look at everything we have waiting for Halloween.

And if your mystery tastes lean a little cozier, don’t miss The Cozy Mystery Reader's Complete Celebration Guide for September. It’s packed with ideas for celebrating Cozy Mystery Month, plus plenty of inspiration for readers who prefer their murders with a side of charm, community, and very suspicious neighbors.