Thanks to your work on the train ticket, the police now know that the victim got on a train at Exeter St Davids station. Luckily, the police have a network of CCTV cameras covering the city, so it should be possible to see what happened to him before he got on the train.

Using automatic facial-recognition software, the police have tracked down a number of CCTV clips which may show the victim in Exeter that morning. Your task is to identify the victim in each clip (if he is there) and plot on a map where and when the footage was taken. In this way, you can find out where he went on the morning of his death.

The Google Maps tool is perfect for this investigation, as the police   have already used it to show where each of the city’s CCTV cameras is located. If you use the police map and compare it to the CCTV you should be able to establish the victim’s movements: this will get you closer to finding out who he was!

The link to the police camera map has been emailed to you, along with your group's log in details for using Google Maps

Click here for the CCTV footage

Click here for instructions for using Google Maps

Each group must;

• edit the CCTV footage down to just the bits which show the victim, arranging the clips in time order
• plot the time and location of the victim’s movements on Google Maps by drawing a line of his route
• if you find out where he went, email this immediately to sgt.knight@csibroadclyst.co.uk with the your group number and ‘CCTV’ in the subject line

Each investigator must;

• use an Evidence Log sheet from your case file to record what you discover
• make a print out of the completed Google Map showing his movements