8.45 P.M Realise there have been so many times in my life when have fantasised about going to a scan with Mark or Daniel: just not both at the same time. Before motherhood, before marriage, Bridget, with biological clock ticking very, very loudly, finds herself unexpectedly pregnant at the eleventh hour: a joyful pregnancy which is dominated, however, by a crucial but terribly awkward question - who is the father? Mark Darcy: honourable, decent, notable...