Unknown Known (S04E31)

S04E01 RYUSUI VS. SENKU S04E02 SCIENCE JOURNEY S04E03 Light Trap in the Darkness S04E04 Dr. X S04E05 DOCTOR VS. DOCTOR S04E06 SCIENCE IS ELEGANT S04E07 The Two Scientists S04E08 LOCK ON S04E09 Light of Science S04E10 Dirty Roads S04E11 Those Who Know the Rules; Those Who Make Them S04E12 Reunion S04E13 Watching the Same Moon S04E14 EARTH RACE S04E15 The Escape S04E16 Medusa Mechanism S04E17 Sickening Yet Beautiful S04E18 Diamond Heart S04E19 Stone Sanctuary S04E20 What I Once Sought to Destroy S04E21 Our Dr. Stone S04E22 Until We Meet Again S04E23 Scientist, All Alone S04E24 Whole New World S04E25 Future Engine S04E26 Fire S04E27 The Universe Is Written in the Language of Mathematics S04E28 Dawn of the Computer S04E29 The Truth About the Rocket S04E30 Stone to Space S04E31 Unknown Known S04E32 Challengers of Science S04E33 Wanting Everything S04E34 Countdown S04E35 Giant Step