Seven Reasons to Murder Your Dinner Guests by K.J. Whittle
Sourcebooks Landmark (Release Date: September 9, 2025)
Lately there’s been a line of books paying homage to the great Agatha Christie, whose And Then There Were None is oft-cited as a major source of inspiration for thriller and mystery writers. Seven Reasons to Murder Your Dinner Guests joins the parade, but it distinguishes itself by an utterly engaging narrative and the seamless integration of unique takes on two other great works: A Christmas Carol and Seven.
In K.J. Whittle’s clever debut, seven strangers meet at a near-hidden location, each drawn by a mysterious envelope inviting them to a dinner at a restaurant named Serendipity’s. During the three-course meal–where their host fails to make an appearance–a second envelope appears alongside each dinner plate and claims to contain the age each guest will die. After an awkward dinner, the ragtag group departs in mild confusion and uneasiness.
Two weeks after the dinner, the first guest is dead: Stella, a YouTube sensation. Alas for Stella, she’s been hit by a train.
The most unsettling element of this tragedy is Stella’s age: twenty-three, the same age predicted as her demise. As the group huddles together at the unfortunate woman’s funeral, they begin to realize that their numbers may soon be up as well. Some will come sooner than others–after all, the order has helpfully been provided on expensive card stock.
It isn’t clear what these seven guests have in common. What earned them an invitation to this dinner, this fate? In addition to Stella, who has the depth of a puddle, there’s Vivienne, a shrewish, cold-hearted magazine editor who mistreats the young mother working beneath her (Cat, who is Cratchit to Vivienne’s Ebenezer); Tristan, a computer programmer with wasted potential; Matthew, a playboy banker; Melvin, a closeted policeman; Gordon, a bulimic and narcissistic professor; and Janet, a lingerie executive desperately clinging to youth.
Upon the demise of a second guest, those who remain puzzle out that each of them represents one of the seven deadly sins. In so doing, this presents an opportunity for self-reflection and growth. Who wants to embody a deadly sin? Wouldn’t the exposure of this flaw be an incentive to change?
For some, yes. We see this in Vivienne, who turns her empty life around, taking in Cat and her young son as boarders and opening herself up to other relationships and experiences she’d previously shunned. She’d been too envious of what others had to be open to them.
Then, there’s Melvin. Representing “sloth,” the identification of this attribute seems to make him lean more into its qualities rather than prompt him to change.
As the weeks, and months, and then years, tick by, death seems inevitable unless the ever-dwindling group discovers who drew them to Serendipity’s.
Or. . .could they be spared by changing? By no longer representing the sin they embodied at the time of the dinner? Is it possible for them to escape the fate literally spelled out in the cards?
Whittle’s novel is more than a clever mystery that pays homage to Christie and Dickens. It provokes existential questions and delivers a killer twist of an ending. With its multiple point of view narrative anchored in Vivienne and its satisfying puzzle to solve, this one stands out in the crowd of modern mysteries and thrillers. Put it on your to-be-read list today.
About the reviewer: A writer of dark comedy thrillers, Sarah Reida is currently seeking representation for her sophomore novel, Murder Boat. Her debut, Neighborhood Watch, received a Kirkus Star and was honored as an Amazon editorial pick as one of the Best Books of the Year So Far 2024. Join Sarah’s elite group of Instagram followers here.
