Her black leather purse, found near St AndrewSquare bus station in Edinburgh days after she disappeared, contained a note with "Samaritans" scribbled on it and an oral contraceptive leaflet.
Det Con Roderick Scott, 41, described how he and colleagues on "Operation Automate", the search for Samantha, knew she had used a cash machine in nearby St AndrewSquare on 12 June 2008.