Jack Ryan Jr is taken by surprise when he runs into old flame Renee Moore in a scenic Barcelona café. Distracted, she says she's waiting for someone and can't talk. She promises to call him later and sends him out onto the street. Which is when the bomb goes off. But as he cradles her, she utters one last word with her final breath: Sammler. Who, or what, does she mean? The latest electric thriller in Tom Clancy's No. 1 bestselling Jack Ryan series.