The Ashes To Ashes actress stars as Detective Inspector Lindsay Denton in the police drama, which also features Scots actor Martin Compston.
But she said that she had to ask a real, high-ranking officer to look into what had happened after she flew into Belfast Airport last July.
Hawes, 37, said that when she entered the airport arrivals lounge she found a minicab driver carrying a white board with her name on it.
The man took her suitcase and began to lead her to his car. But she said: "We'd just walked through the sliding doors out of the airport when I looked over and saw a bunch of drivers from a big cab firm and there was another sign with my name on.
"The second one looked more official. I said, 'Has there been a double booking?' The guy with my case said 'I don't know'. I said 'Who called you?' He said 'I don't know'. Then he let go of my case and walked off."
The next day Hawes told the show's police adviser, a high-ranking officer.
She said: "He put my mind at rest a bit. The police tracked the guy's number plate through CCTV."
Asked whether police worked out what happened, she said: "I don't know ... it was a bit frightening."