Ryan Murphy turns his increasingly unsteady hand to the tale of America’s privileged, cursed dynasty – even diehard fans will find this tedious drama a punishing slogA new product from the Ryan Murphy brand is becoming ever less dependable a delight. Will it be a Nip/Tuck or Glee-level triumph? A return to inaugural American Horror Story form, as his recent outing The Beauty so nearly was? Or will it be something towards the other end of the scale, where the so-bad-it’s-bad, Kim-Kardashian-as-a-divorce-lawyer All’s Fair lurks?Hmm. The latest one is Love Story: John F Kennedy Jr & Carolyn Bessette. It is a nine-episode series that lasts roughly as long as the golden couple’s relationship did in real life and is (unlike All’s Fair) punishingly boring. Some of this will be due to the fact that for a UK audience the Kennedys simply do not hold the fascination they have always held for Americans. Ever since the patriarch Joe successfully manoeuvred his telegenic son John F Kennedy into ...