After six months of fruitless searching for Malcom and Silas, Phineas is losing hope. That is until Raven returns with a message from Malcom-a message that takes Phineas on a faraway adventure and puts him on a collision course with Malcom's dark past and his own future destiny.

Tinley and Otis are left to contend with Raven, who is running amuck at the Wonderland Hotel. The situation gets even stranger when Tinley finds an object from her past-a past hidden in shadow.

PHINEAS BLEAK AND THE GHOST OF THE PAST continues the adventure as Phineas, Tinley, Otis, and Joliet are swept further into the mysteries of the hidden world of Woe, shadows, anchors, and guardians-all leading toward a final confrontation with the evil Erímosi.