Terry Darnell was a detective with Hammersmith police. Now, a year after his death, his daughter Stella has found a folder of photographs hidden in his cellar. Why did he take so many picture of deserted London streets?  Seven cryptic photographs. A decades-old case. Can one woman find a killer?    Before his death, Terry Darnell was a famous detective. His daughter Stella, a cleaner, has inherited his methodical mind. She has also inherited a strange case file: seven photographs of empty streets. Why did her father keep them for so many years?   One photo dates from 1966, to a day when a young girl witnessed something that would haunt her forever.   As Stella scrubs away at the truth, the events of that day begin to haunt her too...    THE DETECTIVE'S DAUGHTER SERIES:  The Detective's Daughter.  Ghost Girl.  The Detective's Secret.  The House With No Rooms.  The Dog Walker.