Logan Crawford

On the season premiere, Danny consults a psychic to solve a murder; Frank is at odds with the mayor; Erin investigates a decades-old case.

Danny considers retiring until Erin asks for his help with a case involving her ex-husband; Jamie and Eddie pose as a couple; Frank clashes with the new mayor.

Root and Finch race to save the machine after Samaritan locates it; Reese is caught in a showdown between Elias and Dominic.

Finch and Reese rush to protect a software chief executive officer when his behaviour becomes erratic following an attack by a hacker.

Danny must track down the drug cartel that attacked a convoy transporting drugs to be incinerated, leaving Baez seriously injured; Frank must tread carefully when a lieutenant's actions cause controversy for the police department.

Danny and Baez search for a veteran who may have PTSD; a woman seeking justice for her murdered daughter catches Frank off-guard during a press conference.