Danny and Baez investigate after a vicious attack that leaves their mutual friend, Maggie Gibson, hospitalised; Frank and the team debate the appropriate memorial protocol for a former police commissioner with a questionable professional legacy.
Jackie goes undercover as an escort, in an attempt to catch a serial killer murdering prostitutes in hotel rooms. Erin meets a potential suitor at an art gallery.
Frank battles with City Council Speaker Regina Thomas over protests against police brutality; Jamie and his nephew, Joe Hill, try to locate a missing Danny and Baez; Eddie helps an abrasive woman find her father's body.
Donna asks Sam to help secure an executive pardon for a friend's grandfather, who was imprisoned in the 1940s, and complications arise regarding the site for the presidential library.
Bull helps a famous social media influencer take her father to court to overturn his legal guardianship over her empire, which he was granted after the young mogul suffered a public mental breakdown.