Julia Somerville, Angela Rippon and Gloria Hunniford are back with more stories of viewers' holiday horrors, investigating situations where the dream is very different from the reality - and how the timing of the trip could make all the difference. Among the stories are the holiday home that was a house of horrors, the perfect beach ruined by a mountain of seaweed and the families who say their day trip to Santa's home in Lapland was a festive flop. Travel expert Simon Calder has tips on visiting the best waterfalls at home and abroad.