A screenwriter needs to research Dublin's violent criminals, but falls prey to gangster chic. How deep is too deep for his research? Ireland's Hundred Thousand Welcomes continues to draw immigrants to its faltering Celtic Tiger economy. For those hundreds of thousands of Poles - Catholic, hard-working, white and like the Irish, survivors of an overbearing neighbour - Ireland works. But the Tiger devours too. Barely a week in Ireland. 20-year-old Tadeusz...