After alerting the police, the group investigates the apartment. The resident, Yuko Kokubun, claims she was merely playing with her large dog.
The children are unconvinced, noting that the silhouette they saw didn't match the movements of a dog. Conan, investigating separately, discovers that Yuko recently cut her hair short while her boyfriend had long hair.
Using his typical brilliance, Conan bridges the gap between the children's testimony and the physical evidence. He eventually uses a Kogoro-shaped paper silhouette to confront the killer.
Episode 1027: “Beyond the Curtain” Before watching this episode, on a scale of 1-10, how much.. Detective Conan Rewatch: Episode 1027 - Tumblr
The use of shadows and silhouettes is a recurring motif in the series, but here it serves as the primary "clue" that triggers the case's resolution. 4. Critical Reception