Thompson, Colleen. Colton 911: Chicago #bk. 5

"Will her virtual scheme succeed when flesh-and-blood killers attack? Desperate to get justice for his slain family, Jones Colton hires Allie Chandler to do what Chicago officials couldn't. Though both are fierce loners, the grieving artisan and the PI agree to work together and keep it professional. When Allie uses her hacking skills to seek out the murderers, their teamwork yields wild passion…and a danger neither expected… **From Harlequin Romantic Suspense: Danger. Passion. Drama."

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