Some secrets don't stay buried--especially when the shadows have names. When respected resident physicians end up dead and vanishing clues leave a city gripped by fear, seasoned detective Dallas Everhart and his sharp-witted partner Marie Lawson must untangle a twisted web of manipulation, obsession, and control. But what begins as a murder investigation soon reveals a deeper, more personal vendetta--a long-buried grudge held by a dark figure, a man who uses influence and reputation like weapons. As Dallas gets closer to the truth, the dark figure's web tightens--dragging innocent lives into his path. But when one marionette refuses to play the puppeteer's game any longer, everything explodes. A once powerful family begins to unravel. And once again, Dallas is left holding the cost of another man's sins. Killer App is a gripping mystery-thriller about manipulation, the hunger for validation, and how far some will go to claim power in the shadows.