第 170 集: Ran與醫生之子關係漸進，而兇殺案發生在家族宅邸中。
Conan detects a change in Ran's behavior and speculates that she may have something going on. Kogoro, on the other hand, takes them to his doctor Yoshiteru Araide's house for a checkup. There, they meet the doctor, his wife Yoko, his mother Mitsu, and son, Tomoaki Araide, with who Ran seems smitten by. The maid, Hikaru, breaks a vase and is warned by Yoshiteru that she'll be fired if she does it again. During dinner, Yoshiteru takes a bath and a black out occurs and another vase breaks. Hikaru flips the breaker on, and she and Yoko find Yoshiteru dead with his electric razor in the bathtub. Alibis and suspect locations are checked but Conan can't bring himself to concentrate on the case as Tomoaki and Ran are seen drawing closer to each other. (Source: Wikipedia)