Diana ‘Steve’ Escott Stevens knows the risks.

For twelve months she has fed and looked after agents preparing for a mission in France. She has been told they have a fifty-fifty chance of coming back

But she is young, brave and speaks French fluently. When she applies to join the Special Operations Executive she is readily accepted and sent off for training to prepare her for the field.

The training is demanding: sabotage, codes, hand-to-hand combat, parachute jumps. But all too soon she finds herself in a Lysander flying to France, where any mistake could mean capture, torture or death, for her and the very people she is trying to liberate.