From Amazon:

Lawyer Mary DiNunzio's new case is a mystery—the strange suicide of an Italian fisherman interned during a dark, unspoken chapter in American history. Armed only with the puzzle pieces of a lock of hair, an old photograph, and a paper covered with indecipherable doodles, Mary digs deep into the case and suspects betrayal—and murder.

Meantime, Mary's friends worry that her investigation is becoming an obsession, so they set her up on a series of truly disastrous blind dates. She escapes romance only to risk life and limb to hunt down a ruthless killer. But someone in the shadows—powerful, cold-blooded, and very deadly—will stop at nothing to keep Mary from the truth.