Killer Abyss

For FBI handler Meg Jennings and her K-9 partner, Hawk, the search for a missing girl leads to the underground caves of Kentucky—ones darker than she ever fathomed.

No descent into the unknown has ever been too treacherous for Meg Jennings and her colleagues in the FBI K-9 unit. They are prepared for anything. But when 14-year old Larissa Whorlow disappears on her way home from school in Nashville, Tennessee, Meg may be proved wrong.

Their only hope is a tracker tag on Larissa’s shoe, worn at...