The actress, 41, said people will need to “wait and see”, after she was questioned about a return, despite her character “falling to her death.”
Speaking to presenters Richard Madeley and Kate Garraway during Tuesday’s episode of ITV’s Good Morning Britain, she said: “I can’t comment, sorry. That’s a very Alice answer.
“Wait and see as always, I’ll keep the mystery forever unfolding. She’s [Alice] always close, she’s close to me all the time, so Alice is never far away.”
In season five Luther, played by Idris Elba, 50, and Alice had a tense stand-off that resulted in her falling through scaffolding to her “death” in a chase scene.
Despite her “death”, Elba revealed that psychopathic Alice could still be alive in the ‘Luther universe’, during an appearance on Capital Radio in March.
Asked about the possibility of a Luther spin-off following Alice, he replied: “This is a question for Neil Cross, who writes Luther and I think he’s definitely thought about that.
“And I think we’ve all imagined an Alice show because it would just be amazing. But also, I think Alison in the Luther universe is not dead.
“Because in performance capture you can be anything. I’m coming back as Alice!”
Wilson will next be seen starring in new six-part drama The Woman In The Wall, which starts on BBC One from August 27.