'Bates Motel' season 5 spoilers: Nestor Carbonell's Romero to avenge Norma's death

In "Bates Motel" season 4, lead character Norma (Vera Farmiga) died at the hands of her own son, Norman (Freddie Highmore) in what appeared to be a consequence of his worsening descent into lunacy.

Fans were thrown into unimaginable shock following Norma's death. Sheriff Romero (Nestor Carbonell), however, could not accept suicide as a likely cause of her death. Feeling extremely devastated, Romero is out for blood in the upcoming fifth and last season of the thriller series.

It seems like Norma's unexpected death not only shocked fans. Emotions also ran high among the cast and crew members. In a recent interview with Rickey TV, Carbonell revealed that he couldn't believe how the show left him emotionally attached to the character he's playing.

Even "Bates Motel" season 5 executive producer Kerry Ehrin admitted that he, too, cried as he wrote the plot scenes. With Farmiga's successful portrayal of Norma, the show seemed to have exceeded fans' expectations as shown by their overwhelming reaction to her unlikely demise.

Although Norma is already dead, Farmiga assures fans that they will see more of her not in the flesh but as a lingering figment of her son's imagination.

"I think there's going to be more liberties and lunacy, given the fact that she is a figment ... a ghost that he's creating," revealed Farmiga in an interview with Zap2it.

As Norman goes psycho in season 5, Norma will continue to become as intimate as ever. As Ehrin said, the lead character will evolve into a "super-dimensional" and "multi-faceted" character, the Inquisitr reported. Furthermore, there will also be kissing scenes between mother and son.

Meanwhile, Rihanna is set to officially join the cast of the A&E show as she assumes the role of Marion Crane. The announcement was dropped during the San Diego Comic-Con in July. The producers said that popstar will play the iconic murder victim character. The role was first played by Janet Leigh in Alfred Hitchcock's cult horror classic "Psycho."

"We wanted to thrust the iconic role into a contemporary spotlight and redefine it in a meaningful and exciting new way," said Ehrin along with co-producer Carlton Cuse in a statement, as reported by The Hollywood Reporter.