A secret life exposed Melbourne, 1925. Reggie da Costa, The Argus 's celebrated crime reporter, takes a break from investigating gangland crime to assist Ruby Rhodes, whose identical twin sister has died in mysterious circumstances. Together, they investigate how Katherine could afford a house, motorcar, expensive jewellery and a wardrobe of the latest fashions on the wages of a museum assistant. With Reggie's assistance and protection, Ruby assumes her sister's identity and infiltrates the illegal gambling dens and risqué social clubs of 1920s Melbourne to uncover the truth. A Deadly Game is the third in the Reggie da Costa Mysteries .