It sounds like the new season premiere of Blue Bloods will be pretty creepy.

'Blue Bloods' Actress Reveals The 'Biggest Challenge' Of The Series

On Monday, Carter Matt shared a synopsis of the episode that will air on September 25 on CBS. Danny is going to receive a frightening message after he and Baez investigate a possible serial killer. It wasn't revealed what the message will be, but it seems to be something that fans will not want to miss out on.

Meanwhile, Erin is going to consider applying for a judgeship as Frank is accused of corruption. Eddie's father is also going to wind up in the hospital, leaving her to go visit him.

'Blue Bloods' Star Shows His Excitement To Be Back On Set

Bridget Moynahan (Erin) previously spoke with Phil Star on how she and her co-stars have turned into a family after spending so many years together. As they move into the sixth year, she looks back on their time together with gratitude.

"I would say that being on this ensemble for this amount of time definitely brings everyone together," Moynahan said. "You know, we live together for nine months a year, basically, working together. And we spend much time together that people have, you know, gotten sick, have gotten married, have had babies and we kinda all celebrate this different part of life together on weekly basis."

The actress then mentioned that the most challenging part of the series is "trying to keep the work fresh."

"Every script is different so sometimes my character might work a little bit and then, sometimes, it might work a lot," she said.