The Patrangers work on a missing persons case in episode 4 of Kaitou Sentai Lupinranger VS Keisatsu Sentai Patranger, An Unacceptable Relationship.
Episode 4: An Unacceptable Relationship
Written by Junko Komura
Directed by Shojiro Nakazawa
There has been serial incidents of people disappearing from inside locked rooms. Keiichiro (Kousei Yuki) gets heated up at this act by the Ganglers, but Tsukasa (Kazusa Okuyama) is familiar with getting him to calm down. The two of them formed a unique bond during their trainee days. The Patrangers visit the victims homes to investigate, but they can’t find any clues. Meanwhile, Tsukasa finds a man who’s selling the same stuffed animal as was found in a victim’s home. It’s here that the Lupinrangers appear.