In John Boorman's new movie 'The Tiger's Tail', the tiger in question is the Celtic one. Set in Dublin, this is the story of a successful business man who thinks he must be losing his mind while stuck in a traffic jam on Pearse Street. What he sees, in this nightmare on Pease Street, is his doppelganger - an exact replica almost - who turns out to be very real indeed. For not only can he not believe his eyes, it turns out he can't believe his mother either. There are dark secrets in the family. And as for the country itself, the whole place is going to hell in a handcart. 'The Tiger's Tail' opens nationwide this Friday.