After being fired from her job as an investigative reporter and spending several days in a mental health facility for a manic episode caused by her bipolar disorder, Abby Burlew is hoping to get her life back on track. To recuperate from her mental breakdown, she ideally needs a stress-free, upbeat environment. She doesn't get one. Shortly after subletting her apartment to a fellow patient she befriended in the mental health center, Abby learns that this person was found murdered on the apartment's doorstep and that it's unclear if she or Abby was the intended victim. The friend had a troubled past and several potential enemies, while Abby, a major witness in an upcoming unrelated murder trial, could also be a target. Abby must contend with the investigation of her friend's murder, the upcoming trial where she is the star witness, and a stalker who is threatening Abby as well as her family, all while navigating the challenges of her mental illness.