Gabriel Weston
В роли: Self - Presenter

Lorna Dawson
В роли: Self - Soil Scientist, James Hutton Institute, Aberdeen (как Professor Lorna Dawson)

David Miller
В роли: Self - Soil Scientist, James Hutton Institute, Aberdeen

Pete Smith
В роли: Self - Blood Pattern Analyst, Harperley Hall Police Training College, Durham

Stephen Hughes
В роли: Self - Fingerprint Analyst

Anthony Campbell
В роли: Self - Chairman, Fingerprint Inquiry (как Sir Anthony Campbell)

Jim Fraser
В роли: Self - University of Strathclyde (как Professor Jim Fraser)