Detective Conan S01 E199 Kogoro Mouri, Suspect (1)

"One truth prevails."

Kogoro is relaxing at a luxury hotel. After dinner, a drunken Kogoro goes missing, prompting the others to search for him. Eri calls his phone, hears it ringing from the inside of Ritsuko’s room, open the door with the chain lock in place, and find Ritsuko strangled to death. Worst of all, Kogoro emerges from the bed, much to everyone’s shock.