"Thirty seconds after the jury announced its verdict, I decided to kill my client." That's Jake Lassiter whose client just beat a murder rap. Will Lassiter let him live long enough to enjoy it? Or will the lawyer really turn vigilante? Lassiter believes that NFL superstar Thunder Thurston, murdered his wife. But the jury said "not guilty." A lawyer is supposed to let it go. Not Lassiter. The ex-linebacker suffers from crushing headaches and a failing memory. His pals, squabbling law partners Steve Solomon and Victoria Lord, fear that all those concussions playing football caused the brain damage known as CTE. They try to help, but Lassiter resists. Can Solomon and Lord prevent Lassiter from becoming a murderer? Will Dr. Melissa Gold, a neuropathologist, be able to halt his decline? Or...is it game over for Lassiter's career and life?