Last one alive

Summary/Review: "Dr. Emily Hartford is back in Chicago, ready to move forward and leave the past behind, until an unexpected request for help sends her deep into an investigation--and into the path of a killer. Seventeen months after the Parkman case, Dr. Hartford has returned to Chicago to finish her surgical residency. But when she is contacted out of the blue by Solange McClelland, the only survivor of a decade-old triple homicide, Emily is compelled to dig deeper. She doesn't know the details of the event but remembers it as one of the few cases her deceased father never solved."--