SECRETIVE STRANGER (4) Jennifer Greene: After a traumatic childhood, Sophie Campbell lives a risk-free life. Her new assignment as a translator finds her in D.C. keeping a low profile until she finds her neighbor, Jon Pruitt, dead in the shared entrance to their respective apartments. Sophie's cocoon unravels with the arrival of Jon's brother, Cord. They're drawn to each other, which surprises Sophie, since men tend to ignore her. The one thing Sophie strives for is honesty and even as she's falling for Cord, she's certain he's not being truthful. This is a terrific beginning to Greene's Campbell sisters trilogy. Sophie and Cord are splendid as a pair of lonely souls who can't believe they've found each other in the midst of a murder investigation.