: Critics often cite Season 4 as one of the show's strongest due to its focus on the complexity of police life and the introduction of series regular Eddie Janko-Reagan.
: This episode laid the groundwork for a multi-season romantic arc, moving from professional partners to life partners. Episode 1: Unwritten Rules
Beyond the character introductions, the episode focuses on the Reagan family navigating the blurred lines between duty and personal ethics: : Critics often cite Season 4 as one
: Assigned to Jamie’s car, their relationship began with a "pseudo-rivalry" due to Eddie's fiery and ambitious nature. Episode 1: Unwritten Rules
: After an armed robbery leads to the death of an off-duty police officer, the investigation tests the "unwritten rules" of police conduct and loyalty.