Working with an undercover reporter, BBC Arabic's Nawal Al Maghafi investigates Shia clerics at some of Iraq's holiest shrines. She uncovers the exploitation of vulnerable girls and young women, tricked into 'pleasure marriage' with the help of clerics. Some clerics are also making money from helping men who want sex with very young girls. Secret filming reveals a cleric conducting a 'pleasure marriage' with a girl he believes to be only 13. Show less