The Enigma Challenge: A Novel

An action-packed novel following an unlikely duo as they race across Europe in a dangerously high-stakes competition worth millions

“With pulse-pounding action, a fascinating cast of characters, evocative settings all across Europe, this puzzle-box of a thriller is the perfect poolside read.”
—Andrea Bartz, New York Times bestselling author of We Were Never Here

Zoe Wilder has the unflashy, solitary life of an academic, studying ciphers in literature at a California university. When her resear...