Book excerpt: Detective Caleb Walker had taken on some tough cases for Guardian Angel Investigations, but when Madelyn Andrews came to him, claiming that her five-year-old daughter was able to "communicate" with her twin sister who'd never made it home from the hospital, Caleb was skeptical. One glimpse at the beautiful single mother, though, and he couldn't walk away. Now, as he looked into what had really happened when Madelyn went into labor, suspicious details were uncovered. Details that prompted Madelyn to cling to him as pain consumed her. And the deeper he dug, the more invested Caleb became in their tiny family, in their safety when danger penetrated their lives--and in their salvation when he promised to bring a little girl home....