If you loved Suspect X, try Midsummer's Equation
A bridge between a film you've already seen and one most people haven't. Midsummer's Equation has roughly 3.3× fewer votes than Suspect X — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Hiroshi Nishitani, and they both carry the bittersweet, cerebral mood tags, and they sit in Crime / Drama / Mystery territory. If that's the register that drew you to Suspect X, the second film will land in a comparable space — through a different lens.
What Midsummer's Equation is
Crisp October. A walkway by a tsunami wall. A physics paper flutters into the surf. A physicist on a coastal panel finds a corpse outside his inn. The dead man’s links to the innkeeper’s activist daughter—and a sharp-elbowed boy glimpsed on the train—begin to knot. Masaharu Fukuyama treats the Sherlockian puzzle to a post-Fukushima chill.

