Frequency

A long-broken ham radio connects a detective with her father, who died on the job 20 years earlier.

When Raimy and Frank speak over the ham-radio, she lets him know that her mom will be murdered unless Frank can figure out a way to warn her. Raimy also delivers devastating news regarding Stan Moreno. Meanwhile, in 2016, Raimy follows a lead in the Nightingale case; and in 1996, Frank and Satch work together to follow the same lead.

When Raimy uncovers evidence in the Thomas Goff case, she relays this information to Frank over the ham radio, which prompts him to take matters into his own hands while ignoring a strong warning from Satch. Meanwhile, Gordo talks Raimy into going out for a drink where she has an interesting encounter with Daniel who still considers her a complete stranger and possible stalker. Lastly, Raimy struggles to adapt to life without Julie, and Frank tries to adapt to life with her.

With the date of Julie’s abduction rapidly approaching, Raimy and Frank each work to gather information from a girl whose mother was taken by the Nightingale. Meanwhile, Raimy meets Kyle (guest star ROB MAYES) who immediately remembers her from a brief encounter in the past. She doesn’t recognize him at first, but flashes of their night together come rushing back to her.

When Frank helps Raimy uncover clues from the past to help solve a present day murder case, it brings up two different memories of her first day in the NYPD. Through Frank, Raimy continues to learn more about Stan, which begins to cause friction with Satch. Meanwhile, Frank has trouble controlling his jealousy as he struggles to give Julie her space.

In 2016, Raimy meets a strange character named Karl, who speaks to himself in the future. In 1996, Frank feels like he's being taunted by the Nightingale. Meanwhile, having discovered new information, Raimy and Frank set up a plan to use the Nightingale's next victim as bait.