Detective Conan S01 E516 Fūrinkazan - The Mysterious Armoured Knight

"One truth prevails."

Kogoro is hired by the Torada family to solve the murder of Yoshirō Torada; Yoshirō was swept away by a tornado and was found by an unknown culprit, who instead of helping him, left a dead centipede beside Yoshirō and left him to die. .