What lies behind the mystery of scores of strange posters in shops and pubs around Tenby can be revealed today.
The signs, saying in big letters, Dean or Frank, have puzzled local people since they started appearing about two weeks ago.
There have also been cryptic posters saying Scrum Rodent, and this, for crossword lovers, quickly gives the game away.
The posters are in fact drawing attention to a big show tonight (Friday, March 13) at the De Valence Pavilion called The Rat Pack. And the 'Frank' and 'Dean' referred to are Las Vegas stars Sinatra and Martin.
The show has dead ringers for these cool legends, together with a Sammy Davis Jnr, a Nancy Sinatra and a live band.
Despite this intriguing campaign, there are still £16 tickets available for tonight's (Friday) show at 8 pm.