Spy novelist. Former spy. THE PEACOCK AND THE SPARROW out now from @simonschuster/@atriabooks. A New Yorker & NPR Best Book of the Year. Edgar Award winner.

Northern Virginia
THE PEACOCK AND THE SPARROW is out now in paperback. Joseph Weisberg, creator of The Americans, calls it "the most realistic espionage story I've read." Hope you will check it out. @AtriaMysteryBus @ITWDebutAuthors @AtriaBooks @simonschuster #thepeacockandthesparrow
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Getting Halloween on. Hanging w/ fellow writers LC Parfomak, KT Nguyen, Deanna Fowler, Aggie Blum Thompson, @JennVDK, @SeanDNaylor, et al. I dressed as a character from a spy novel, obvs. (Can u guess? Hint: she was inspo for my forthcoming book, "Swallowtail.") @AtriaMysteryBus
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I.S. Berry | THE PEACOCK AND THE SPARROW retweeted
A review of The Cauldron @ft today: “A riveting look at the cultures, ideas and maddening complexity that made the modern region, both incredibly erudite and marvellously well written; the book sings…. it is a riveting deeply absorbing work that stands out for the grand vistas that it opens up before diligent readers….” @DrRadchenko @wnbooks @Ed_Critica @KlettCottaTweet @CappelenDamm @Planetadelibros @AAKnopf
The Cauldron by Simon Sebag Montefiore — how the Middle East became a fiery brew ft.trib.al/BLYTNfF
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I.S. Berry | THE PEACOCK AND THE SPARROW retweeted
Former NYPD homicide detective and first-rate debut author @JasonAllison76 and I will be talking books, cops, and probably making jokes about firefighters this Friday at Orinda Books in Orinda CA at 6 pm. If you're in the neighborhood, stop on by.
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Happy pub day to Edgar-nominated @AdamPlantinga, a great writer and a great guy. Can’t wait to read his latest, Dark Country.
My new novel comes out today. I'm proud of it. Critics are already tumbling over each other to declare it “the third book in the Kurt Argento series.” Another notable reviewer wrote, “there were two other books before it, I think, and now apparently there’s this one.”
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I.S. Berry | THE PEACOCK AND THE SPARROW retweeted
A former CIA operations officer, an Army Special Operations vet and an recovering financial analyst climb a mountain. Rank them in likelihood that they return.
Incredible (chilly) hike through the mountains around Lake Louise in @BanffNP w/ fellow thriller writers Amran Gowani & @JackMurphyRGR. Stunning views. Intersected a porcupine. @Bouchercon @AtriaMysteryBus #bouchercon2026
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Incredible (chilly) hike through the mountains around Lake Louise in @BanffNP w/ fellow thriller writers Amran Gowani & @JackMurphyRGR. Stunning views. Intersected a porcupine. @Bouchercon @AtriaMysteryBus #bouchercon2026
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Day 2 of @Bouchercon. Got to hang w/ George Easter & Meredith Anthony (Deadly Pleasures magazine) & authors Reed Bunzel, @jasonallison76, Jonathan Ames, & @JackMurphyRGR. @AtriaMysteryBus
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Hello, Calgary! 1st day of @Bouchercon 2026. Great, as always, connecting with fellow thriller writers.
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Headed to Calgary for @Bouchercon & stopped at the cool town of Minot, ND, home to Minuteman missiles & Al Capone's former smuggling depots, where he transported booze from Canada via underground tunnels. @AtriaMysteryBus
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I.S. Berry | THE PEACOCK AND THE SPARROW retweeted
.@isberryauthor and the Peacock still showing strong at @WaterstonesPicc in London!
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Thanks to the @ArmyNavyCC for hosting me & this fun panel of thriller writers, incl. Aggie Blum Thompson, KT Nguyen, & Christine Gunderson. Great turnout & great moderating by @SJWishnow. @AtriaMysteryBus
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I.S. Berry | THE PEACOCK AND THE SPARROW retweeted
Massachusetts people! Come see me and Edgar and Agatha Award-nominated author @EdwinHillauthor this Tuesday at Book Love in Plymouth. We’ll sign books and maybe we’ll even sign dogs—Birdie might make an appearance. Space is limited, RSVP now!
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Finally got to meet @OrenKessler in person, author of the terrific PALESTINE 1936, one of the best books out there for understanding the origins of today's Middle East conflict. Among other accolades, it was named a @WSJ best book of the year. Serious, impressive scholarship.
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Amazing - and well-deserved! Congrats, @simonmontefiore!!
Exciting news. The Cauldron goes straight into NYTimes bestseller list #4 @AAKnopf @wnbooks @Ed_Critica @KlettCottaTweet
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I.S. Berry | THE PEACOCK AND THE SPARROW retweeted
Companions. Yes: These go well as a pair @wnbooks @AAKnopf
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Packed house at @lostcitybooks for KB Brodsky's DC launch of BEYOND HONOR. Loved interviewing the lively fascinating husband-wife team behind this book that's part spy novel, part military thriller, part NYC intrigue (think Bonfire of the Vanities dressed up in camo..) Fun night.
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Such a trenchant piece from someone who knows: @simonmontefiore
I have written today about the widening Cauldron of the Middle East & the Convergence of Theatres that offer both danger of merging wars but also hopeful conjunctions in our turbulent world. I list the 6 theatres - Russia-Ukraine, India-Pakistan, Cauc-Central Asia, Byzantine, East/Horn Africa & Sahel that are fusing with the old Middle East… @WSJ @WSJopinion @AAKnopf @wnbooks @Ed_Critica @KlettCottaTweet wsj.com/world/middle-east/si…
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I.S. Berry | THE PEACOCK AND THE SPARROW retweeted
I have written today about the widening Cauldron of the Middle East & the Convergence of Theatres that offer both danger of merging wars but also hopeful conjunctions in our turbulent world. I list the 6 theatres - Russia-Ukraine, India-Pakistan, Cauc-Central Asia, Byzantine, East/Horn Africa & Sahel that are fusing with the old Middle East… @WSJ @WSJopinion @AAKnopf @wnbooks @Ed_Critica @KlettCottaTweet wsj.com/world/middle-east/si…
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