Detective Conan Volume 3

Conan, Rachel, and Richard are given a ride on the Hatamoto family cruise ship after missing their return boat. During their cruise the head of the Hatamoto family is murdered and the fiancé of the victim's grand-daughter is the prime suspect. The fiancé's father killed himself when the Hatamoto family took over their company and this is cited as the murder motive. Conan's investigates and uses his tranquilizer watch and voice-changing bowtie to impersonate Richard. He declares the fiancé's innocence and declares the grand-daughter's cousin as the murderer, citing unrequited love as the motive. Richard is hired by a surgeon who has been receiving monthly toys and money. His job is to identify the sender and Conan investigates, while at the same time, Rachel suspects him to actually be Jimmy. Conan identifies the sender to be the father of one of the surgeon's patient who died during surgery and who plans to murder the surgeon's son. After stopping the murder, Conan has Hiroshi Agasa call Rachel using Jimmy's voice, settling her suspicions.