Doctor Who is a British science fiction television program produced by the BBC. The series follows the adventures of mysterious time-travelling adventurer known only as "The Doctor", a Time Lord from the planet of Gallifrey, who explores time and space with various companions in his ship, the TARDIS.
On 23rd November this year (2013) Doctor Who celebrates its 50th Anniversary, making it the longest running science fiction television series in the world.
‘Who looks at a screwdriver and thinks, “Ooooh, this could be a little more sonic?”’ - Captain Jack Harkness
The Doctor’s trusty sonic screwdriver, never far from his side (except for the fifth and sixth Doctors who went ‘hands free’). But how many screwdrivers has the man owned over the centuries? Is there anything it can’t do?
North 47 28. Doctor Who : Daleks in Manhattan : Time Crash
West 121 57. The End of the World : Bad Wolf : The Dominators

Remember to record the Gallifrey symbols found in the log book, they are needed to determine the coordinates of the bonus cache of this series. After conversion, 29 are labeled North and 29 are labeled West followed by a number. The bonus cache, The Best Idea Ever Invented, provides the instructions how to determine its coordinates.