In Her Skin (also known as I Am You from the working title How to Change in 9 Weeks) is a 2009 Australian drama movie written and directed by Simone North. The film is based on the true story of the murder of 15-year-old Rachel Barber, Ivan Southall's granddaughter, who went missing on March, 1, 1999. It was later discovered that Barber was murdered by a former neighbour and family babysitter, Caroline Reed Robertson.