Lucy, George and Lockwood are comfortable ensconced in their little world where children fight ghosts during a terrible outbreak of hauntings. Things are even worse than normal, however, with a serious cluster of deadly hauntings in Chelsea, but Lockwood & Co have notfor various reasons, been asked to assist even though nearly every other reputable agency in London has. Still, they're kept busy; so busy, in fact, that Lockwood takes on an new assistant. Lockwood and George are delighted with the new, efficient and organisationally brilliant addition. Lucy not so much. Then again, Lucy is exploring her own Talent, a unique ability to communicate with ghosts. Though dangerous, Lucy is attracted by the idea of solving hauntings with methods that don't involve fighting and swords and chains and salt bombs - Lockwood and George are not so sure.

After a spectacular success, Lockwood & Co are brought into the Chelsea outbreak, but the mess is complicated, and only George, with his way of looking at things, can see through to heart of the problem. Rivalries and repressed feelings and sneaky use of unique talents are the very worst things to bring along on a mission of this magnitude, but nonetheless they're all there as the gang try to find the truth and stop the haunting.

Another fantastic adventure, wonderfully written, spooky atmosphere, terrific worldbuilding and great characters. Perfect supernatural fun.