Lauren Patten

As Jamie and Eddie's wedding day approaches, Frank worries about the toast he'll deliver at their rehearsal dinner. Also, Erin interviews a witness whose story leads her to doubt Eddie's honesty, since she took his initial statement, and Danny and Baez unravel the complicated love life of a young homicide victim.

The return of Rachel Witten (Lauren Patten), Eddie's former partner turned social worker, tests her loyalties and conflicts Frank, when Rachel brings an accusation of excessive force against an officer.

After an incident where Officer Witten's (Lauren Patten) backup physically could not keep up with a chase, Frank must decide whether to implement a more rigorous fitness test for the NYPD. Also, Danny is hesitant to pursue a cold case after learning who the original detective was; Anthony begs Erin to stall a murder trial so he can gather more evidence; and Eddie is vexed by Jamie's disapproval of her joining a fraternal organization.

As Danny consults a psychic to solve the murder of a young boy, Frank is at odds with the mayor over how best to protect the city from an uptick in crime following a high-profile shooting. Also, Erin investigates a decades-old case in which the primary eyewitness to the killing is her boss, D.A. Kimberly Crawford (Roslyn Ruff), who was 13 years old at the time.

After a former officer waits on Frank at a restaurant, he feels guilty about the circumstances surrounding why she was fired, and he tries to reinstate her. Also, Danny and Baez investigate the murder of a star college basketball player linked to sports betting, Erin seeks justice in an apparent DUI, and Jamie and Eddie pick a wedding venue.