"A high-stakes, high-powered thriller." —Booklist

Sometimes, what you can’t see will kill you…

Kendra is surprised when she is visited by Dr. Charles Waldridge, the researcher who gave her sight through a revolutionary medical procedure developed by England's Night Watch Project. All is not well with the brilliant surgeon; he’s troubled by something he can’t discuss with Kendra. When Waldridge disappears the very night he visits her, Kendra is on the case, recruiting government agent-for-hire Adam Lynch to join her on a trail that leads to the snow-packed California mountains. There they make a gruesome discovery: the corpse of one of Dr. Waldridge’s associates. But it’s only the first casualty in a white-knuckle confrontation with a deadly enemy who will push Kendra to the limits of her abilities. Soon she must fight for her very survival as she tries to stop the killing…and unearth the shocking secret of Night Watch.

IRIS JOHANSEN is The New York Times bestselling author of Night and Day, Hide Away, Shadow Play, Your Next Breath, The Perfect Witness, Live to See Tomorrow, Silencing Eve, Hunting Eve, Taking Eve, Sleep No More, What Doesn't Kill You, Bonnie, Quinn, Eve, Chasing The Night, Eight Days to Live, Blood Game, Deadlock, Dark Summer, Pandora's Daughter, Quicksand, Killer Dreams, On The Run, Countdown, Firestorm, Fatal Tide, Dead Aim, No One To Trust and more.

ROY JOHANSEN is an Edgar Award winning author and the son of Iris Johansen. He has written many well-received mysteries, including Deadly Visions, Beyond Belief and The Answer Man.

Iris Johansen and Roy Johansen have together written The Naked Eye, Sight Unseen, Close Your Eyes, Shadow Zone, Storm Cycle, and Silent Thunder.