What do you get when you set a cozy mystery series at science fiction conventions? Kristine Kathryn Rusch’s fan-favorite Spade/Paladin series, of course.

The infamous private detectives return for their latest mystery in “At Witt’s End.”

Here’s the synopsis:

When legendary science fiction fan Brendan Witt dies, Secret Master of Fandom and private detective Spade finds himself planning a memorial charity auction to honor Witt’s final wishes.

But when some very rare and highly collectible fanzines go missing, Spade and Paladin must race to find them before anyone notices.

Just one problem: Why they went missing might just prove the biggest mystery of all.

You can read this story for free on Kris’ website as part of her Free Fiction Monday. Click here to do so.

But don’t dally. The story is only available for one week.

Speaking of limited-time opportunities for a great deal in fiction, the Darker Realms Fantasy StoryBundle ends in a few days. As a reminder, you can get Fiction River Presents: Darker Realms, Kris’ FantasyLife and Other Stories (Author Preferred Edition), and Dean Wesley Smith’s The Free Meal: A Ghost of a Chance Novel, along with seven other fantastic books (plus support the AbleGamers charity) for just $15!

To learn more about the bundle, click here.

Allyson Longueira is publisher of WMG Publishing. She is an award-winning writer, editor and designer.