Lucille Teresa Guardino. A woman of many identities. Lucille to her doting mother, Lulu to her devoted husband, Mom to her pre-teen daughter, Lucy to her friends, LT to her co-workers, and Supervisory Special Agent Guardino to the criminals she captures for the FBI's Sexual Assault Felony Enforcement squad. A loving mom and wife, dutiful daughter, consummate professional, and kick-ass federal agent, Lucy is living the perfect life. Until the day she comes up against a predator more vicious than any she's ever tackled....

Nerves of Steel introduces Dr. Cassandra Hart, a Pittsburgh ER doctor who discovers that her very own hospital is the source of a deadly street drug. When her best friend is murdered and Cassie starts getting death threats, she must trust Detective Mickey Drake to protect her. Yet even as a passionate love affair blossoms between them, a relentless killer draws ever closer.

Special Agent Constant Marlowe is tasked with taking over the investigation of an obsessed serial killer trolling the small town of Clark Valley in the quiet—and eerie—plains of the Midwest. Two female victims in quick succession, the same brutal MO, and every indication that victim number three is only days away. Also in the killer’s scope is Constant herself. When she interviews a local family who may be potential witnesses, she leads the devil to their doorstep, throwing their lives into chaos.

Dr. Leah Wright returned to her childhood home in rural Pennsylvania with her husband to find peace and quiet, start afresh, and raise her six-year-old daughter Emily. But when she gets home one dark winter night, clutching roses in her hand, she finds her daughter huddled under her bed and her husband’s blood all over the floor.... When Detective Luka Jericho is called to investigate, he’s shocked to learn that the killer left a witness behind - the victim’s young daughter. 

Twenty years ago Emily Mills's father was murdered, and she found his body hanging in the backyard. Her younger sister, Madison, claims she was asleep in her room. Her older sister, Tara, claims she was out with friends. The tragedy drove their mother to suicide and Tara to leave town forever. The killer was caught. The case closed. Ever since, Emily and Madison have tried to forget what happened that night - until an eerily similar murder brings it all back.