Article continues below advertisementPierce Brosnan was spotted reuniting with his eldest son, Christopher, following two decades of estrangement. Pierce, 72, and Christopher, 52, were seen getting dinner in London with the Irish actor's other son Dylan, 28, earlier this month. The Thursday Murder Club star revealed in 2005 that he had cut off his adopted son due to his refusal to get help for his drug and alcohol addiction.Article continues below advertisementSource: megaPierce Brosnan told 'Playboy' in 2005 that he had cut his oldest son off.