Innocent Hostage (Hard Core Justice #4)
Juno Rushdan

Even work together.
Their marriage is nearly over. But then Deputy US Marshal Allison Chen-Boyd and FBI hostage negotiator Henry Boyd learn their eight-year-old son has been kidnapped. They’ll work together—temporarily, of course—to capture the dangerous cartel hell-bent on vengeance. But as danger mounts and bombs lurk around every corner, they’ll have to learn to trust each other again to save their embattled family.