



24 letters. 12 months. One gripping Cold War story unfolding in real time.
A Year-Long Spy Thriller, Delivered by Mail
Berlin, 1961. The Wall is new, the city is divided, and secrets move faster than the shadows.
Codename: Sable. Elegant, elusive, and deadly, she navigates the smoky jazz clubs, safe houses, and hidden alleys of a city teetering on the edge of war. When a mysterious letter arrives addressed only to "Darling," a dangerous game begins. Is the unknown correspondent watching her every move an ally, enemy, or something in between?
Told entirely through a year of letters exchanged between Sable and the enigmatic informant, The Berlin Exchange immerses you in a world of espionage, seduction, and betrayal. Each correspondence is a puzzle, each note a potential trap, and every word could be the difference between survival and capture.
Experience the tension, decode the secrets, and follow the letters across a divided city where nothing is as it seems.... and no one is truly safe.
Every two weeks, a new letter arrives in your mailbox — not a bulk mailing.