While investigating, they learn that Itakagi's band logo was of a snake with nails piercing through it. After questioning a tattooist, they learn that the tattoo was new and only three people have gotten it. After further investigation, they are able to deduce the tattoo is on the driver's right arm due to the traffic flow on the bridge and that the only way Takumi could have seen his arm is if the steering wheel was on the right side of the car. They realize that advertisement combined with lights from a building created the silhouette of an upside down hammer; Using this knowledge, they are able to pinpoint where the culprit threw the body off from the bridge. Through the process of elimination, the culprit is revealed to be a man named Kiritani. After the authorities arrest Kiritani, Eisuke attempts to question Kogoro about Rena causing Conan to realize he is in fact searching for her.