Fourteen years ago, prosecutor Jessica Yardley's husband went to prison for a series of brutal murders. She's finally created a life with her daughter and is a well-respected attorney. She's moving on. But when a new rash of homicides has her ex-husband, Eddie, written all over them - the nightmares of her past come back to life.

Ruthless defense attorney Tatum Graham has been living large in Miami, but when his recently acquitted client claims another victim, Tatum has a crisis of conscience. Disillusioned, he heads to his small Utah hometown for a simpler life...but that’s not what he finds. Soon after he arrives, Tatum’s childhood crush offers him a job at the county attorney’s office and assigns him a murder case.

This is Reaper speaking. So begins an anonymous letter published in a Utah newspaper after a young couple is viciously murdered. Tooele County sheriff Elizabeth Gray leads the investigation into the double homicide, which is eerily reminiscent of a string of brutal killings years ago. When the letter leads detectives to yet another body, Gray calls on an old friend for help.

Inspired as a boy by the multiple meanings to be found for a single word in the dictionary, Kohei Araki is devoted to the notion that a dictionary is a boat to carry us across the sea of words. But after thirty-seven years creating them at Gembu Books, it's time for him to retire and find his replacement. He discovers a kindred spirit in Mitsuya Majime - a young, disheveled square peg with a penchant for collecting antiquarian books and a background in linguistics - whom he swipes from his company's sales department.

After the killing of a prominent mob lawyer, NYPD homicide detectives Jacob Jackson and Caitlin Grimes start receive chilling, written “rules” for how to commit the perfect murder. "Rule number one for the perfect murder: Evidence is your enemy. Leave none behind." Jackson (Reid Scott) and Grimes (Cobie Smulders) race to find the killer, setting them on a collision course with the city’s crime underbelly, and a perpetrator who seems happy to toy with them. “Rule number two. No crimes of passion. The perfect murder is always business, never pleasure.”