you have ot change to thimbletack, go into the wALLS turn left and follow that till you
come to the part with the beams jujmp across 4 of them and then across the other 4 with
electricity and then you need to turn round and jump on the last one and turn right there
is a little hole to go through, then follow that straight forward and then you use your
jack to swing over and loosen the screw for the sword, you then go back to the study
change to mallory and pick up sword , hope this helps

thimbeltack can get the sword for malory