If you're in any way afraid of heights, you shouldn't watch this, or maybe you should as perhaps you will somehow be cured too. Mel Giedroyc will take five people with an extreme fear of heights on a once-in-a-lifetime trip to cure their debilitating phobia. The sufferers confront their fears head-on by undergoing exposure therapy, which basically involves scaring the absolute crap out of them all. They will attempt a series of increasingly difficult height-based challenges, from the peaks of the Alps to the world's tallest building, all designed to push them to their limits. Their journey will take them all around Europe, eventually ending up in Abu Dhabi where the final challenge is to scale the 828m Burj Khalifa tower, which is the tallest building in the world. Ah here, bit much no? Fun to watch from the comfort of the couch though, all he same.