When Wayne goes missing on the day of Nikki & Mike's wedding, the joyous festivities are put on hold as Jason and the MPU race to locate her and finally bring down Inspector Braun and his connection to the car bombing murders.

The MPU is on the case when a young boy claims his father was abducted by aliens as they were stargazing at a remote campsite. Jason and Nikki enlist Mike's help in getting access to Braun's computer files. Kemi and Helen partner up and venture out into the field.

When a young woman is kidnapped and locked away to freeze to death, the MPU suspects her boyfriend or his father might know more than they're letting on. Meanwhile, Wayne uses her connections to try and get a job at the MPU, and Kemi is put in a dangerous situation while on the case.

When a bride goes missing on her wedding day, Mike and Kemi discover the woman was living a deceptive life. Meanwhile, the mystery surrounding Keith's disappearance starts to unravel as he tells Jason and Nikki more details about his time in captivity and leads them to a cabin where they find a horrifying scene.

When Nikki suddenly goes missing, MPU bands together and discovers that Raina, a criminal who Nikki put away, has escaped and is out for vengeance.

The MPU is on the case when a young hockey player goes missing during a fight with an opponent on the ice. Kemi is unexpectedly reunited with a face from the past. Nikki runs interference with Braun when Jason dives deeper into the car bombing murders.

A young pregnant woman goes missing one day before her emergency c-section and the adopting mother turns to the MPU to locate her before the baby's life is risked. Meanwhile Jason digs deeper in the car bombing case and meets a disapproving Braun.

A popular travel influencer goes missing and the MPU race to find her as a hurricane rages and a state of emergency is declared. Mike and Wayne get closer as Helen connects with someone unexpectedly in the aftermath of Nikki's bachelorette party.

When an Army Lieutenant, and the wife of Houston’s old Army buddy, is kidnapped, MPU suspects a Major who the victim had reported for harassing women at the base. However, Jason and Mike learn that the victim and her husband were having marital and financial issues, leading them to uncover a dangerous and deadly weapons trade.

The MPU investigates the abduction of a young child, whose abduction is likely revenge related to her father's work.

Jason, Nikki and the MPU team investigate when a woman runs down a man and forces him to get in her car at gunpoint. Meanwhile, more information about Keith's kidnapper comes to light.

The MPU works to track down the kidnapped son of a doctor, but the case takes a turn when his mother gets in direct contact with the kidnapper. Meanwhile, Kemi expresses her concerns for Sidney's wellbeing to Nikki and Jason.

The MPU searches for a college student after she goes missing during a house party. Meanwhile, Sidney and Keith try to adjust to normal life again.

When a brewery foreman is kidnapped after arguing with his CEO over safety violations, MPU finds evidence that suggests that the victim was taken by competitors over a stolen beer formula. Also, Bennett’s ex, who is also Houston’s step-son, threatens to make her life hell for interrogating his client without representation.

Mike is taken back to his first unsolved case when the remains of an Amish man surface seven years after his murder. After he reconnects with the man's family, the wife of the man mysteriously goes missing, prompting a massive search and disclosing a web of deceit.

A foster care worker is reported as missing, but after he ends his own life, the MPU starts to investigate a pregnant woman he was seen with who has been missing for two years. Meanwhile, Sidney follows Keith and fears he may be dangerous.

When a limousine filled with teenagers, including a Senator's son, is hijacked on the way to prom, MPU discovers that the ex-girlfriend of one of the victims may have been the actual target. Now, Jason, Mike and the team must race to the prom in order to save the girl before it's too late.

An accomplished playwright is kidnapped prior to a local theatre's grand reopening. MPU discovers that the victim and her partner had received a video threat ordering them to shut down the troubled theater, which had previously been severely damaged in a fire decades earlier killing 87, or the playwright will be burned to death. Meanwhile, Jason asks Wayne to track down who's the father of Sidney's baby.