A gang killing leads Carlos to new information on his father's murder. TK contemplates a major life decision as Owen is determined to get Austin's first responders' health care coverages increased.

Cast: Rob Lowe, Gina Torres, Ronen Rubinstein, Jim Parrack, Natacha Karam, Brian Michael Smith, Rafael L. Silva, Julian Works, Brianna Baker, Kelsey Yates, Skyler Yates, Jackson Pace, Parker Young, Alan Autry, Joseph Raymond Lucero, Michael Reilly Burke, Carlito Olivero, Adam Baldwin