"Clare Mulley skillfully weaves together Zawacka’s personal story with the broad sweep of events. Both infectious and mesmerizing."

– The Wall Street Journal

“Celebration of a hero of the Polish resistance during World War II—whose work, because she was a woman, was long obscured. Elzbieta Zawacka was the only woman ever to be enlisted in the elite special forces of the Polish army in exile, who was parachuted into her Nazi-occupied homeland to help organize resistance fighters A well-told story from a little-known corner of World War II history.”

– Kirkus Reviews

"Gripping, moving and important: an amazing and until-now neglected story of female WW2 heroism and secret derring-do. This tale of the resistance fighter Agent Zo is amazingly told and deeply researched by the excellent historian of WW2 espionage Clare Mulley.”

– Simon Sebag Montefiore, author of The World: A Family History of Humanity

"A remarkable story of resistance, elegantly told.”

– Roger Moorhouse, author of The Forgers

“This is a terrific story, told with passion and authority, about a Polish woman resistance fighter of extraordinary courage and ingenuity. Not simply a page turner, this is an important addition to the literature of World War Two, a story for our times about female heroism which should be widely known.”

– Anne Sebba, author of Ethel Rosenberg

"Agent Zo is a triumph. The deftly told life of this remarkable heroine helps restore women to their rightful place in the record of the Second World War. Absolutely essential reading.”

– Hallie Rubenhold, bestselling author of The Five

“The astonishing story of an extraordinary woman—for so long silent and unseen bit now, thanks to Clare Mulley’s forensic research and razor-sharp eye for detail, no longer forgotten.”

– Jonathan Freedland, author of The Escape Artist, The Many Who Broke Out of Auschwitz to Warn the World

Praise for Clare Mulley’s The Spy Who Loved:

"One of the most exciting books I've read this year."

– The Spectator

"Brings alive a glamorous, swashbuckling heroine.”

– The Sunday Times (London)

"A stunning biographical achievement."

– Alison Weir, #1 New York Times bestselling author

"This book, massively researched and excitingly told, brings an extraordinary heroine back to life.”

– The Daily Mail