John Farrell was a darling of Ireland’s restaurant scene, opening a string of prominent eateries across the city. Most still trade successfully today. The jewel in his crown however was Luna. Dazzling both critics and diners, it won restaurant of the year in its very first year. At its peak, it was generating revenues of €40,000 a week. Now it is bust, and a liquidator is examining the cause of its demise. So just what happened Luna? How did a star of the restaurant scene fall from the sky? ***** Businessman Brian O’Farrell first met John Farrell in 1999 in…