Killers of a Certain Age

Older women often feel invisible, but sometimes that's their secret weapon. They've spent their lives as the deadliest assassins in a clandestine international organization, but now that they're sixty years old, four women friends can't just retire-it's kill or be killed in this action-packed thriller by New York Times bestselling and Edgar Award-nominated author Deanna Raybourn.

Billie, Mary Alice, Helen, and Natalie have worked for the Museum, an elite network of assassins, for forty years...