McCall races to rescue two siblings who run into trouble after stealing a grocery truck carrying firearms. Meanwhile, Harry and Delilah help Mel through her trauma after her kidnapping.
McCall investigates a death in an apartment building where residents believe the structure is haunted after a young woman suspects her grandmother was pushed down a flight of stairs via supernatural means.
Harry goes undercover in a surprising role to help McCall search for a woman with a secret online persona. Meanwhile, Mel decides to go to therapy and tries her hand at songwriting as a way to heal her trauma.
The team races to rescue a young hacker, who reminds Harry of his past self, being forced to hack for criminals. Meanwhile, Dante is back in town to visit his father and Mel makes a breakthrough in therapy.
The team investigates who is trying to put a hit on a stand-up comedian. Also, McCall grapples with her feelings for Dante, who is still in town deciding how to proceed with Big Ben, and Delilah continues her college search.
McCall and Mel go undercover in a prison to find a woman who went missing on the day she was scheduled to be released.
A joyous holiday season turns into a cartel Christmas for McCall, whose romantic life reaches an inflection point when a crime syndicate holds her, Dante and her ex-husband, Miles (Stephen Bishop), captive in a hospital takeover. Also, Harry strives to break his years-long track record of giving Mel awful holiday presents.
After a young girl is the victim of a shootout in her neighborhood, the team races to find out if a gang war is afoot and whether the crime is connected to a shipment of stolen guns McCall is chasing down. Meanwhile, love is in the air when Aunt Vi and Delilah prepare for their respective dates.
McCall and the team search for a missing pregnant woman whose baby may be in danger. Meanwhile, Dante meets his brother James for the first time.
McCall is asked to help a local family that lost their life savings in a suspicious fire. Also, Mel opens up to her parents about her PTSD.
McCall and the team are on the hunt for buried treasure after a history professor obsessed with finding missing gold is killed. Meanwhile, Dante is reluctant to introduce his sons to McCall after she invites them over for dinner.
After a soldier suddenly goes AWOL while planning to expose an alleged secret military project, McCall and the team learn that her life is in danger; Dante makes a career move to be closer to McCall and his family.
McCall visits “The Grave Digger,” a serial killer she put behind bars a year ago, to uncover who is behind a series of copycat murders. Meanwhile, Dee skips her Peer Ear meeting to go to a party with Cam.
The team suspects Aunt Vi's friend Evelyn is being taken advantage of by a con man. Meanwhile, McCall decides to take the day off equalizing and spend quality time with Delilah.
McCall is contacted by Samantha Reed, whose father, ex-CIA agent Elijah Reed, is missing. While Samantha joins forces with the Equalizer team to track down the agency legend, she learns more about her family's past in the Dominican Republic.
When Dante's brother, James, seeks the team's help to clear his client's name in a shooting, they uncover a plot to bomb an international anti-terrorism conference. Meanwhile, Delilah gets ready for prom and learns she has been accepted to UCLA.
While on a romantic getaway, McCall and Dante are abruptly ambushed by Salazar and his army. Meanwhile, Aunt Vi finally decides to take the next step in her relationship with Captain Curtis, and Dee meets with her favorite author who may be able to help her get into her dream university.
