now the Piper travels the world seeking pests so he may kill for the fun of it. The three animal kings end the story by swearing revenge. Even with his newfound powers, Saul is forced to stay in the shadows with King Rat, but cannot forget his own friends and past. He visits Kay but the two no longer understand each other. This visit leads to Pete, being revealed as the returned Piper, finding and murdering Kay. Meanwhile, the animal kings' plans begin to fall short and they drift apart. Saul begins to push his new boundaries and explore London on his own. During this time, he meets Deborah, a vagrant. Together they return to Saul's former flat, where he finds his father's old notebook. Here finds an entry about an attack on his mother nine months before his own birth. He realises he is not King Rat's nephew but his son, by way of rape and that everything since his father's death has been a set up by King Rat, who must therefore be the murderer of the man Saul considers his father. As they discover these facts, the Piper confronts Saul and Deborah. He kills Deborah but Loplop saves Saul. The piper reveals that he cannot control Saul as he can the others, as the Piper can only play one song at a time and as such a tune that controls rats will be ignored by Saul's human side and vice versa. Saul returns to the sewers to confront King Rat, leading to a falling-out. He wants to go his own way and leave the Piper to the animal kings. Natasha and Pete have set up an act at a club, Jungle, to debut their music. Fabian is interrogated by the police again and he realises that the flute left behind when Saul was attacked belongs to Pete. He calls the police to meet him at Natasha's home but arriving ahead of them he is wounded and both he and Natasha are taken by the Piper. After wandering for a few days, Saul meets up with Anansi, who informs him of Kay's death by the Piper. He begins to notice something is wrong in the sewer as well, as the rats have disappeared, their scratching replaced by a new sound, music. He traces the sound back to King Rat's throne room, now filled with dancing and dead rats;