A Dangerous Place by Jacqueline Winspear

Spring, 1937. Four years after she set sail from England, leaving everything she most loved behind, Maisie Dobbs is making her way home, only to find herself in a dangerous place. She was seeking peace in the hills of Darjeeling, but her sojourn is cut short when her stepmother summons her back to England. But on a ship bound for Southampton, Maisie realises she isn't ready to return. Against the wishes of the captain she disembarks in Gibraltar - the British garrison town is teeming with refugees fleeing a brutal civil war across the border in Spain. Days after Maisie's arrival, a photographer is murdered, and Maisie becomes entangled in the case, drawing the attention of the British Secret Service as she is pulled deeper into political intrigue on 'the Rock' . . .
Binding: Paperback / softback