Kogoro is going to a client's in the morning, but Conan is still thinking about the SMS number (in his pajamas). Ran gets angry and yells for Conan to change. In hurridness Conan forgets to take his cellphone. And just at this moment Ran decides to send mail to Shinichi. Imagine her surprise when Conan's cell rings exactly when she sends her mail! Ran almost sees the mail's contents when Conan comes back, and takes the cell back. Now Ran is very suspicious, and expresses it stongly, making Conan very scared. The client had lost her cellphone, and is desperate to have it back (she is afraid that her husband would know that she was in love with someone else) Also, she is sure that someone in the house took it away from her. Kogoro tries to find the cellphone, but to no avail. Just when Kogoro gives up the client says that she has her phone back! Conan hurridly goes to Professer's house to tell him about Ran's suspicion... to find that on TV Kogoro's client is dead!