♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 7, Episode 19
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 7, Episode 6
# Math, Science, History,
unraveling the MYSTERY #
The Big Bang Theory Season 11, Episode 9
# 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 10