Your eyes aren't deceiving you - Garda patrol cars are on the streets of Belfast.
But the PSNI needn't be concerned, because it's all part of the filming for a new three-part revenge thriller.
A BBC Two drama called Paula started shooting on Monday at the former First Trust Bank next to Custom House Square.
Garda cars were seen parked along Queens Square yesterday morning and film trucks were parked on Ulster Street throughout the week.
Paula is a drama about the life of a young chemistry teacher in Dublin and her one-night stand with an attractive - but dangerous - man.
Their affair leads them down a path of destruction that takes a toll on everyone around them.
Olivier Award-winner Denise Gough will play the role of Paula and she will be joined by Tom Hughes and Owen McDonnell.
Hughes is known for his role as Prince Albert in ITV's Victoria, and McDonnell starred in RTE's Single-Handed as Garda Sergeant Jack Driscoll.
Paula was written by Dublin-born filmmaker and playwright Conor McPherson and is directed by Alex Holmes.
"Exploring new ways to tell stories is always an inspiring challenge, and the opportunity to weave a drama across three evenings is one I have enjoyed immensely," Mr McPherson said.
"The trust and freedom they have given me at every step is something every writer dreams about, and the astonishing cast they have assembled couldn't be more exciting."
Ms Gough, who won the Best Actress Olivier Award this year for her performance as Emma in the play People, Places and Things, said that she was delighted to be working with Mr McPherson.
"Having worked with Conor McPherson on stage, I am so excited to work with him again on this amazing project," she added. "He's written a script that I know all of us involved feel very privileged to be part of bringing to life. Paula is a complex woman and I can't wait to play her."
The show is being produced by BBC Northern Ireland Drama, alongside Cuba Pictures for BBC Two with funding from Northern Ireland Screen. Paula began filming in Belfast this month and will continue to be shot exclusively in Northern Ireland.