Chiko - S1.E22

Three years have passed. Shunka goes to visit Chiko in England. There is a killer on the loose in the city, and Shunka finds out Chiko seems to have lost interest in playing detective. Chiko says she has no intention of returning to Japan, because school is fun for her now. They find a lost Japanese boy, and in a search for his parents; they come upon the killer, who appears to be something more than human, although still susceptible to a kick to the groin. Chiko, Shunka and the boy escape, but the killer chases. Ken appears with his trademark throwing knife, and the killer now focuses on him. The boy's parents are found by the police and Tome, the killer is easily defeated by Ken and Dr. Kayami.