Colleen McGrath, a young single mother, goes missing moments after dropping off her son Jake at his childminder's house. The team discover that Colleen has been struggling with money and has been increasingly desperate to earn extra cash after she lost her cleaning job and she finds out that Jake needs an expensive hearing aid. It isn't long before evidence turns up that suggests Colleen may have got herself involved with some dangerous and violent drug dealers in an attempt to earn much needed money.