Before the Cradle Falls by James F. David

Paralyzed by drink and despair since the accidental death of his young daughter, Shelby, Detective Kyle Sommers nonetheless must lead a task force to catch a brutal serial killer. Nicknamed the Cradle Robber, this murderer has methodically snuffed out the lives of children all along the California coast. Now he's come to Portland. While investigating, Sommers learns that a strange man has been saving local children from various dangers - then mysteriously disappearing. With the help of Sherrie Nolan, a brilliant and embittered scientist, Sommers learns that the man is a time traveler who, grieving for his own murdered child, has vowed to use his brilliant mind to create a way for a future generation of children to live. And Sommers hungrily hopes to save children who have died in the past as well. Particularly Shelby. Laughed off the task force as word spreads of his theory, Sommers investigates on his own. Desperate to undo his tragic history and rebuild his career, Sommers determines that the way to stop the Cradle Robber is to get to the time traveler. But the Cradle Robber has hatched a diabolical scheme. Intent on continuing his carnage, the baby-killer has laid a trap for both Sommers and the time traveler ... one sure to destroy every adult and child in the city.

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