Episode 4×20 “Enervo”

The team alongside the LA Division of the FBI are in a race to stop bombs that have been scattered throughout the city by a suspected terrorist.

Meanwhile, the joint task force is suspicious of the CIA’s involvement in the situation.

Guest starring is Niecy Nash as Simone Clark, Felix Solis as Matthew Garza, Kat Foster as Casey Fox and Frankie Faison as Christopher “Cutty” Clark.

“Enervo” was written by Alexi Hawley and Terrence Paul Winter, and directed by Bill Roe.

Air Date: Sunday, May 1 (10:00-11:00 p.m. EDT), on ABC.

Photos: “Enervo”

Episode 4×19 “Simone”

Officer Nolan and the LA division of the FBI enlist the help of FBI trainee Simone Clark when one of her former students is suspected of terrorism following an explosion at a local power station.

Guest starring is Niecy Nash as Simone Clark, Felix Solis as Matthew Garza, Kat Foster as Casey Fox and Frankie Faison as Christopher “Cutty” Clark.

“Simone” was written by Alexi Hawley, Terence Paul Winter and directed by Liz Friedlander.

Air Date: Sunday, April 24 (10:00-11:00 p.m. EDT), on ABC.

Photos: “Simone”

Episode 4×18 “Backstabbers”

After the robbery of a train filled with valuable auction items turns deadly, the team is called to investigate.

Meanwhile, Officer Chen has doubts about being Sergeant Bradford’s aid and is upset when he doesn’t give her the recognition she deserves.

Elsewhere, Officer Harper takes matters into her own hands and makes a life-changing decision about her personal life.

Guest starring is Greg Grunberg as Larry “Badger” Macer, Drew Seely as Francis Bloomfield, Olesya Rulin as Danielle Bloomfield and Brandon Larracuente as Thackeray Bloomfield.

“Backstabbers” was written by Vincent Angell and directed by Tori Garrett.

Air Date: Sunday, April 10 (10:00-11:00 p.m. EST), on ABC.

Photos: “Backstabbers”

Episode 4×17 “Coding”

Officer John Nolan and the team feel they must negotiate with a distraught man who is holding a hospital hostage to ensure his wife receives a lifesaving surgery.

Guest starring is Crystal Coney as Nurse Lisa, Dylan Conrique as Tamara Colins, Arjay Smith as James Murray, Kanoa Goo as Assistant District Attorney Chris Sanford, Siena Goines as Riley Templeton, Deidrie Henry as Dr. Spader.

“Coding” was written by Nick Hurwitz and Sylvia Franklin, and directed by Bill Roe.

Air Date: Sunday, April 3 (10:00-11:00 p.m. EST), on ABC.

Photos: No official photography was released by ABC for this episode.

Episode 4×16 “Real Crime”

Desperate to reset the way the world sees him, Officer Thorsen reluctantly decides to be a part of a reality show to help rebrand his image, only to be thrust back into yet another deadly situation.

With cameras rolling, the show’s producer is found murdered and the team must investigate before Aaron is made suspect number one.

Guest starring is Tru Valentino as Aaron Thorsen, Tamala Jones as Yvonne Thorsen and Rome Flynn as Morris Mackey.

“Real Crime” was written by Bill Rinier and Paula Puryear, and directed by Rob Seidenglanz.

Air Date: Sunday, Mar. 13 (10:00-11:00 p.m. EST), on ABC.

Photos: No official photography was released by ABC for this episode.

Episode 4×15 “Hit List”

Officer Harper puts Officer Aaron through “Plain Clothes Day,” but the exercise is interrupted by an unsuspected visitor.

Meanwhile, after two witnesses for an upcoming grand jury case are murdered, the team must track down the killers before it’s too late.

Guest starring is Brent Huff as Officer Smitty, Brystal Cone as Nurse Lisa, Tru Valentino as Aaron Thorsen, Kanoa Goo as Assistant District Attorney Chris Sanford, Michael Trucco as Assistant District Attorney Sean Del Monte and Rome Flynn as Morris Mackey.

“Hit List” was written by Elizabeth Davis Beall and directed by Robert Bella.

Air Date: Sunday, Mar. 6 (10:00-11:00 p.m. EST), on ABC.

Photos: No official photography was released by ABC for this episode before airing.

Episode 4×14 “Long Shot”

Officers Nolan and Harper help Skip Tracer Randy on his first bounty hunter case.

Meanwhile, Officer Chen and Sergeant Bradford are on the hunt for a perpetrator on a citywide crime spree.

Guest starring is Brent Huff as Officer Smitty, Dylan Conrique as Tamara Colins, Flula Borg as Skip Tracer Randy and Jamil Walker as Curtis Jones.

“Long Shot” was written by Natalie Callaghan and directed by Fernando Sariñana.

Air Date: Sunday, Feb. 27 (10:00-11:00 p.m. EST), on ABC.

Photos: “Long Shot”

Episode 4×13 “Fight or Flight”

Officers John Nolan and Lucy Chen must fulfill three quests if they want to get a stolen police helicopter back safely from a teenage thief.

Meanwhile, Officer Nyla Harper and Aaron Thorson must guard a convicted cop killer in the hospital following a prison riot.

Guest starring is Tru Valentino as Aaron Thorson, Arjay Smith as James Murray and Jay Hunter as Officer Gil Webb.

“Fight or Flight” was written by Brynn Malone and directed by Lanre Olabisi.

Air Date: Sunday, Jan. 30 (10:00-11:00 p.m. EST), on ABC.

Photos: “Fight or Flight

Episode 4×12 “The Knock”

The team responds to the report of a severed hand washing up on the beach and are on the hunt to find its owner.

Meanwhile, Tim attempts to prove he isn’t a control freak to Lucy and invites her on a double date with him and Ashley.

Guest starring is Brent Huff as Officer Smitty, Crystal Coney as Nurse Lisa, Helena Mattsson as Ashley McGrady, Kanoa Goo as ADA Chris Sanford and Jay Hunter as Officer Gil Webb.

“The Knock” was written by Zoe Cheng and directed by Charissa Sanjarernsuithikul.

Air Date: Sunday, Jan. 23 (10:00-11:00 p.m. EST), on ABC.

Photos: “The Knock”

Episode 4×11 “End Game”

The team must rely on a criminal for his expertise to help take down an even bigger threat.

Meanwhile, Officers Chen and Bradford investigate the murder of an unhoused teenager who used to be friends with Tamara.

Guest starring is Matthew Glave as Oscar Hutchinson, Dylan Conrique as Tamara Colins, True Valentino as Aaron Thorson, Arjay Smith as James Murray, Steve Kazee as Jason Wyler, Kanoa Goo as Assistant District Attorney Chris Sanford and Jamil Walker Smith as Curtis Jones.

“End Game” was written by Terence Paul Winter and directed by Tori Garrett.

Air Date: Sunday, Jan. 9 (10:00-11:00 p.m. EST), on ABC.

Photos: “End Game”

Episode 4×10 “Heart Beat”

Now that John Nolan knows about Bailey’s past, he must decide if they still have a future.

Meanwhile, when a plane crashes in the middle of the city the team races to find out why.

Guest starring is Matthew Glave as Oscar Hutchinson, Arjay Smith as James Murray, Helena Mattson as Ashley McGrady and Steve Kazee as Jason Wyler.

“Heart Beat” was written by Fredrick Kotto and directed by SJ Main Muñoz.

Air Date: Sunday, Jan. 2 (10:00-11:00 p.m. EST), on ABC.

Photos: “Heart Beat”

Episode 4×09 “Breakdown”

Desperate to break free from his connection to Elijah, Wesley tries to plant a listening device in his office to incriminate him.

Meanwhile, Officer Bradford and his sister, Genny, learn an unsettling truth about their father.

Guest starring is Zayne Emory as Henry Nolan, Brent Huff as Officer Smitty, Enver Gjokaj as Donovan Town, Dylan Conrique as Tamara Colins, Brandon Jay McLaren as Elijah Stone, and Peyton List as Gennifer “Genny” Bradford.

“Breakdown” was written by Alexi Hawley and directed by Chi-Yoon Chung.

Air Date: Sunday, Dec. 12 (10:00-11:00 p.m. EST), on ABC.

Photos: “Breakdown”

Episode 4×08 “Hit and Run”

The team goes on a city-wide hunt for an individual who is threatening a mass casualty event.

Meanwhile, Tim’s sister Genny shows up unannounced with some surprising news, and Lopez continues her inner struggle over Wesley’s deal with Elijah and tries to come up with a plan to get them out of it.

Guest starring are Peyton List as Genny Bradford and Tru Valentino as Aaron.

“Hit and Run” was written by Vincent Angell and directed by Bill Roe.

Air Date: Sunday, Dec. 5 (10:00-11:00 p.m. EST), on ABC.

Photos: “Hit and Run”

Episode 4×07 “Fire Fight”

In the aftermath of Fred’s house explosion, Officer Nolan and Bailey discover there’s more to Fred’s death than meets the eye.

Meanwhile, Officer Chen and Officer Bradford demand a treasure hunt rematch and enlist Officer Grey to help set the terms to a new bet, all while they arrest a series of wealthy female criminals.

Elsewhere, Wesley struggles to keep it together under the pressure of his debt to Elijah.

Guest starring is Jenna Dewan as Bailey, Maury Sterling as Marcus and Brandon Jay McLaren as Elijah Stone.

“Fire Fight” was written by Corey Miller and directed by Tori Garrett.

Air Date: Sunday, Nov. 14 (10:00-11:00 p.m. EST), on ABC.

Photos: “Fire Fight”

Episode 4×06 “Poetic Justice”

Officer Nolan and team are on a hunt to retrieve a buried stash of gold before any treasure seekers get hurt.

Meanwhile, Bradford is tasked with encouraging the oldest cop at the station to retire and invites him to ride with him.

Guest starring is Jenna Dewan as Bailey Nune, Tru Valentino as Aaron Thorsen, Peter Onorati as Officer Jerry McGrady and Roland Buck III as Spike.

“Poetic Justice” was written by Bill Rinier and Natalie Callaghan, and directed by Chi-yoon Chung.

Air Date: Sunday, Nov. 7 (10:00-11:00 p.m. EST), on ABC.

Photos: “Poetic Justice”

Episode 4×05 “A.C.H.”

When a new designer drug hits LA streets, it turns users into “zombies,” and Officer Nolan and the team have a Halloween they won’t soon forget.

Back at home, Lucy questions whether her apartment building might be haunted.

Guest starring is Pete Davidson as Pete Nolan, Enver Gjokaj as Donovan and Dylan Conrique as Tamara Colins.

“A.C.H.” was written by Zoe Cheng and Paula Puryear, and directed by Dan Willis.

Air Date: Sunday, October 31 (10:00-11:00 p.m. EDT), on ABC.

Photos: “A.C.H.”

Episode 4×04 “Red Hot”

Officer Nolan and Officer Chen search for a missing person who may have international ties that puts everyone’s lives in danger.

Meanwhile, Harper continues the search for a serial arsonist after responding to a report of an injured cyclist.

Elsewhere, Wesley must overcome an impossible task.

Guest starring is Jay McLaren as Elijah, Tru Valentino as Aaron Thorsen and Jenna Dewan as Bailey.

“Red Hot” was written by Diana Mendez and directed by Lisa Demaine. 

Air Date: Sunday, Oct. 17 (10:00-11:00 p.m. EDT), on ABC.

Photos: “Red Hot”

Episode 4×03 “In the Line of Fire”

Officer Nolan and officer Chen report to a structure fire and suspect that there is more to the situation than meets the eye.

Meanwhile, after witnessing a sniper shooting, the team searches for the shooter and discovers that the perpetrator has a connection to one of their own.

Guest starring is Jenna Dewan as Bailey Nune, Dylan Conrique as Tamara Colins, Tru Valentino as Aaron Thorsen, Tricia Helfer as Claire Ivey and Aaron Leddick as Robinson.

“In the Line of Fire” was written by Robert Bella and directed by Dan Willis.

Air Date: Sunday, Oct. 10 (10:00-11:00 p.m. EDT), on ABC.

Photos: “In the Line of Fire”

Episode 4×02 “Five Minutes”

Officer Nolan and Officer Chen’s run-in with an infamous thief tips them off to a potentially big heist surrounding the Getty’s big gala event.

Meanwhile, Nolan works up the courage to ask Bailey out on date.

Guest starring is Jenna Dewan as Bailey Nune, Dylan Conrique as Tamara Colins, Tru Valentino as Aaron Thorsen, Tricia Helfer as Claire Ivey and Aaron Leddick as Robinson.

“Five Minutes” was written by Brynn Malone and directed by Lisa Demaine. 

Air Date: Sunday, Oct. 3 (10:00-11:00 p.m. EDT), on ABC.

Photos: “Five Minutes”

Episode 4×01 “Life and Death”

Officer Nolan and the entire team race against the clock to locate Lopez after she is kidnapped on her wedding day, not only to save her life but her unborn child’s.

Guest starring is Camille Guaty as Sandra “La Fiera” De La Cruz, Kamar De Los Reyes as Detective Sgt. Ryan Caradine and Kyle Secor as Agent Sam Taggart.

“Life and Death” was written by Alexi Hawley and directed by Bill Roe. 

Air Date: Sunday, Sept. 26 (10:00-11:00 p.m. EDT), on ABC.

Photos: “Life and Death”