The promise
(Book)

"When Elvis Cole is hired to locate a woman who may have disappeared with a stranger she met online, it seems like an ordinary case--until Elvis learns the missing woman worked for a defense contractor and was being blackmailed to supply explosives components for a person or persons unknown. Meanwhile, in another part of the city, LAPD officer Scott James and his patrol dog, Maggie, enter an abandoned building to locate an armed and dangerous thief, only to discover far more than they expected: The fugitive is dead, the building is filled with explosives, and Scott and Maggie are assaulted by a hidden man who escapes in the chaos, all as a bloodied Joe Pike watches from the shadows."--Publisher's web site.