Akira Kurosawa double bill.
Warui Yatsu Hodo Yoku Nemuru / The Bad Sleep Well (1960)
The wedding reception introduction is very impressive.
Tengoku To Jigoku / High And Low (1963)
The police procedural half is especially well done.
I've been to Kamakura, where the kidnappers took the kid, many times, and more or less pinpointed the location of the house where the two dead junkies were found. Apart from obvious rebuilding, it still looks recognisable.
Also tried looking for similar locations he used in Nora Inu/Stray Dog, but Tokyo is changed beyond recognition.