Sibylline Press releases Claudia Hagadus Long mystery Sisters at an Exhibition

Sibylline Press has released Sisters at an Exhibition: A Zara and Lilly Mystery by Claudia Hagadus Long, a San Francisco-set art mystery that expands into New York and France. The novel follows two sisters chasing a missing curator and a vanished Caravaggio sketch through family secrets, World War II clues, and international crime.

Why it matters: - Sisters at an Exhibition adds a new title to Sibylline Press’s lineup of women-authored fiction and mystery. - The novel pairs an art-theft plot with family history and wartime backstory, giving readers a cross-genre mystery built around a missing curator and a missing Caravaggio sketch. - The book is available now wherever books are sold.

What happened: - Sibylline Press announced the release of Sisters at an Exhibition: A Zara and Lilly Mystery by Claudia Hagadus Long on August 18, 2026. - The story follows sisters Zara and Lilly as they investigate the disappearance of a museum curator and a Caravaggio sketch from a San Francisco museum. - The search stretches from San Francisco to New York City and then to an old barn in Alsace, France.

The details: - Zara is portrayed as lawyerly and skeptical. - Lilly is older, flirtatious, and quick to join a chase. - Zara learns that a major museum donor who was dating the missing curator is a handsome, wealthy criminal. - The plot includes flashbacks to a journal kept during World War II by the father of one of Lilly’s many boyfriends. - The novel is a mystery and runs 254 pages. - Trade paperback ISBN: 979889740022, priced at $20.00. - EBook ISBN: 979-8897400232, priced at $9.99. - Sibylline Press says the book is part of its focus on publishing women authors over 50. - Claudia Hagadus Long is also the author of nine novels, including the Zara and Lilly Mysteries and the Simpato Mysteries. - Long’s novel Nine Tenths of the Law has been optioned for a major motion picture. - Long is a Harvard and Georgetown University Law Center graduate. - Long practices law in the San Francisco Bay Area and lives in Napa County, California, where she owns the independent bookstore Read Head Books.

Between the lines: - The marketing positions the novel as both a fast-moving mystery and a character-driven story, with humor and heart layered onto the art-world crime plot. - Publisher comments and outside praise frame the book as appealing to readers who want historical detail, international settings, and sibling chemistry. - The release also reinforces Sibylline Press’s broader business model centered on books by women over 50.

What's next: - Sibylline Press will continue selling the novel through its regular retail channels. - The publisher will likely keep promoting the book through its mystery readership and broader women-authors focus. - Readers can expect the Zara and Lilly series to remain part of Claudia Hagadus Long’s catalog.