"the Rookie" — Free Fall(2019)

: Nolan works alongside his girlfriend, DHS Agent Jessica Russo. Their relationship is strained when Jessica shoots an unarmed, surrendering terrorist to prevent him from potentially triggering a device—a cold, tactical decision that shocks Nolan.

: Officers John Nolan and Talia Bishop discover a body in a bus station restroom, unknowingly stumbling upon a dead terrorist who had been exposed to the virus. "The Rookie" Free Fall(2019)

The chaos forces each rookie and training officer (TO) into life-altering situations: : Nolan works alongside his girlfriend, DHS Agent

: Jackson, struggling with his confidence after a fallout with his father, finds redemption while apprehending a second terrorist on a crowded bus. The chaos forces each rookie and training officer

The episode concludes on a cliffhanger with Tim's life hanging in the balance, leaving the fate of the Mid-Wilshire team uncertain heading into the next season.

The episode centers on a terrorist cell’s plot to release a weaponized hemorrhagic fever across Los Angeles.