
# Math, Science, History,
unraveling the mystery #
The Big Bang Theory Season 11, Episode 17

♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 12, Episode 15

♪ Math, Science, History
The Big Bang Theory Season 12, Episode 23

# Math, Science, History,
unraveling the mystery #
The Big Bang Theory Season 11, Episode 8

♪ Math, Science, History,
unraveling the mystery ♪
The Big Bang Theory Season 12, Episode 2