Neil Gaiman's Neverwhere #5

The Earl sends Richard and Door in search of the Angelus, which could provide the key to the mystery of who murdered Door's family. Their search brings Richard back into London Above, where he meets a familiar face, even if no one there recognizes his. Meanwhile, the Marquis goes solo on a mission that could cost him his life when he saunters into the lair of sardonic assassins Croup and Vandemar.