La ira de Mulgarath

After their run-in with the midgets, Jared, Simon, and Mallory return home bruised and battered. However, when they get there they find that the mansion has been ransacked and that the evil Mulgarath has taken not only Arthur Spiderwick's Guide, but his mother as well! With only the help of Thimbletack, Hogsqueal and Byron, the Grace brothers must defeat Mulgarath and his goblin army. But before they face Mulgarath, they must rescue Arthur Spiderwick from Lorengorm and the elves, and they'll have to hurry, because every second counts.