When Rania Alayed's family receive strange texts from her claiming to be in Turkey, they report her missing - before police focus on her husband, Ahmed Al Khatib.
When Jane Harrison went missing in 1995, the search was fruitless and the case closed three months later. But 17 years on, new evidence revealed shocking truths.
When Susan Waring's family grow concerned about her lack of contact, she is reported missing. Two months on, police believe the case is a murder investigation.
