THE ROOKIE - “Going Under” - Officer Lucy Chen goes undercover to infiltrate an illegal firearm operation, and Detective Harper and Officer John Nolan work together to solve a mystery involving severed limbs found around the city. TUESDAY, APRIL 25 (8:00-9:00 p.m. EDT), on ABC. (ABC/Ser Baffo)MELISSA O'NEIL

THE ROOKIE - "S.T.R." - Officer Tim Bradford’s ex-wife returns and asks the team to help her save someone from her undercover past. Isabel’s return also creates additional pressure in Lucy and Tim’s relationship as they assist in the search. TUESDAY, APRIL 18 (8:00-9:00 p.m. EDT), on ABC. (ABC/Raymond Liu)ERIC WINTER, MELISSA O'NEIL

THE ROOKIE - “A Hole in the World” - The team investigates a pattern of kidnappings which leads them to a discovery that hits close to home with one of their own. Meanwhile, Lucy and Tim’s relationship is put to the test as they begin to feel the hard hours of their jobs. TUESDAY, MARCH 28 (8:00-9:00 p.m. EDT), on ABC. (ABC/John Fleenor)LISSETH CHAVEZ

THE ROOKIE - “Double Trouble” - When Dim goes missing, Officer Chen and Sergeant Bradford, along with the CIA, set out to find him and enlist the help of Juicy. (TUESDAY, MARCH 21 8:00-9:00 p.m.), on ABC. (ABC/Raymond Liu)MELISSA O'NEIL

THE ROOKIE - “Daddy Cop” – In the midst of a heatwave and a citywide blackout, Officer John Nolan and Aaron follow increasingly large leads after they discover criminals hiding at the station. While on duty, Officer Chen makes an alarming discovery after being called to a scene where a pungent smell has wreaked havoc. Meanwhile, Lucy and Harper scheme to get Tim out of his new job and into a more exciting position on an all-new episode of “The Rookie,” TUESDAY, JAN. 24 (10:00-11:00 p.m. EST), on ABC. (ABC/Gilles Mingasson)ARJAY SMITH, MEKIA COX, ALYSSA DIAZ, NATHAN FILLION, MELISSA O'NEIL

THE ROOKIE - “The Naked and The Dead” – The search for a missing boy leads the team into the middle of a dangerous drug war between two rival gangs on an all-new episode of “The Rookie,” TUESDAY, JAN. 10 (8:00-9:00 p.m. EST), on ABC. (ABC/Raymond Liu)DAN SOUTHWORTH, PEYTON LIST, LANDON GORDON, ERIC WINTER, TRU VALENTINO

THE ROOKIE - “Take Back” – Officer John Nolan and the team investigate the unexpected death of a suspect in police custody. Their search also uncovers a very delicate loose end that could jeopardize Officer Celina Juarez’s career. Meanwhile, Sergeant Grey and his wife, Luna, go to New York to visit their daughter, Dominique, only to realize she never made it home from the night before on an all-new episode of “The Rookie,” SUNDAY, DEC. 4 (10:00-11:00 p.m. EST), on ABC. (ABC/Raymond Liu)LISSETH CHAVEZ, NATHAN FILLION

THE ROOKIE - “Crossfire” – Officer John Nolan and Celina witness a shooting, realize the victim was already dead, and investigate further. Back at home, Bailey has been feeling off-center ever since the proposal, leaving Nolan to wonder what he can do to make her feel more comfortable. Elsewhere, Lopez and Harper enlist Lucy’s help to investigate the gang-related murder of a local shopkeeper on an all-new episode of “The Rookie,” SUNDAY, NOV. 6 (10:00-11:00 p.m. EST), on ABC. (ABC/Raymond Liu)LISSETH CHAVEZ, NATHAN FILLION, RICHARD T. JONES

THE ROOKIE - “The Fugitive” – Officer John Nolan and Officer Celina Juarez are on the hunt for a fugitive after a car incident goes awry. Meanwhile, a past injury comes to haunt Tim and Lucy comes through during his time in need in more ways than one on an all-new episode of “The Rookie,” SUNDAY, OCT. 23 (10:00-11:00 p.m. EDT), on ABC. (ABC/Raymond Liu)ALYSSA DIAZ

THE ROOKIE - “The Choice” – Rosalind returns with a vengeance and Bailey’s life is left hanging in the balance. With a ticking clock, the LAPD and the FBI join forces, and Officer John Nolan is forced to make a deadly decision after a harrowing ultimatum on an all-new episode of “The Rookie,” SUNDAY, OCT. 16 (10:00-11:00 p.m. EDT), on ABC. (ABC/Raymond Liu)NATHAN FILLION

THE ROOKIE - "The Q Word" - In part one of the season finale, their rookie year is coming to an end and officers Nolan, Chen and West are about to be squeezed harder than ever before as their training officers evaluate whether they are truly ready for the job. Meanwhile, after one of their rookie classmates is involved in a shooting, the team uncovers some unsettling evidence on an all-new episode of "The Rookie," airing SUNDAY, MAY 3 (10:00-11:00 p.m. EDT), on ABC. (ABC/Ron Batzdorff)NATHAN FILLION, HANNAH KASULKA