When a deadly car accident leads Charlie and Rex to investigate reports of a mysterious blue light in the sky, they discover the truth is more science than fiction.

When Donovan's ex, a recovering addict, wakes up with blood on her hands and a dead roommate in her apartment, the team moves quickly, finding there's more to the story.

When an activist is killed during a break-and-enter at a water bottling plant, all the evidence points towards his partner-in-crime, but Charlie and Rex aren't convinced.

Art Of Darkness. With a gallery curator found murdered on his showroom floor and a missing sculpture, Charlie, Rex and Sarah are thrown into the world of high art. Jesse feels the burn when Sarah picks him as her new running buddy.

Charlie investigates the host of a local morning show after her media mogul husband is suddenly found dead.

After a reviled restaurateur´s food truck explodes, killing one of his employees, Charlie and Rex find themselves with a few too many suspects. A flirtation has Charlie torn between a possible new love and Rex.

Sarah finds herself in the middle of a hostage situation at a medical testing lab. When the team realizes there's no way inside without aggravating the gunman. Charlie sends Rex in to monitor the situation.

When the pharmacist at Charlie's aunt's retirement home is found dead, she alerts him to a mysterious string of recent fatalities among the home's residents.

The animal lovers of St John's are under suspicion as Charlie and Rex investigate the death of a professional pet sitter. At home, Charlie finds himself in need of Sarah's help.

When a controversial university professor is found dead in his classroom, Charlie and Rex investigate leads while Jesse goes undercover and soon finds himself in danger.

When a woman is found comatose in a graveyard, Charlie and Rex dig up a cold case which may be connected. Donovan asks Charlie to spy on his daughter after she begins acting suspiciously.

When a thrill-seeking daredevil falls to his death, Charlie and Rex unravel a conspiracy within the city's parkour community.

Rex proves himself as a member of the Major Crimes team when he tails a kidnapper. Meanwhile, the clock is ticking as Charlie and the team realize the abduction is part of an elaborate plan.