Tether

Natalia Carrigan is a psychopath. A chip implanted in her brain is the only thing keeping her out of prison and the underground laboratories of neuroscience company, Prospective Neuro. Her father's years of service to the company has allowed her that luxury. A tether between her chip and her sister Melody's alerts them of her glitches.

After three years without incident, Natalia kills a man. The family are moved to Seattle, along with family friend and chip programmer, Charles, to avoid complications. Melody's new friendship with Alex, from the nearby café, has complicated matters, drawing them all into a dangerous world of controversial science, rogue law enforcement and long-hidden secrets.