A Florida stripper with an affinity for serial killers and mass murderers threatened to commit a violent killing spree in a “very public place,” police said.

Brein Basarich, a 31-year-old dancer at Show Girls in Plant City — about 25 miles east of Tampa — was arrested Wednesday after posting threats of widespread carnage on her Tumblr page under the chilling username “taking-lives,” according to a police affidavit obtained by The Post.

“I had a vision … of a very public place, only one way in and one way out,” one post reads. “Preferably a bar/club on a busy night. 2019 has a lot in store if my plans go accordingly!”

When asked by another user if she had homicidal urges, investigators said, Basarich responded: “I feel at times a lot of us have urges, whether they will admit or not is the question. So yes, I have.”

Basarich, who admitted to police that she was behind the troubling social media account, told another Tumblr user that she planned to buy an AR-15 semi-automatic rifle “soonish,” according to the affidavit.

“Pretty excited,” she replied. “It will be my first gun and I plan to get others.”

Basarich also professed her love for “true crime” and told police she’s a big fan of “serial killers and mass murderers,” according to the affidavit.

Basarich, of Lakeland, is now facing felony charges of written threats to kill, do bodily injury or conduct a mass shooting or act of terrorism. She was released from the Polk County Jail on Thursday after posting $5,000 bond, jail records show. Attempts to reach her early Monday were unsuccessful.

Gary Gross, a Lakeland police spokesman, said Basarich was arrested after her mother called her at work and told her to come home. No weapons were found at the Elon Crescent address.

Gross insisted Basarich’s alleged threats posed “no direct threat” to the public.

“There’s really no substance to it,” Gross told The Post during a brief interview Monday.

It’s unclear if the 5-foot-1, 135-pound Basarich had acquired an attorney.