♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 12, Episode 20
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 7, Episode 21
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 12, Episode 13
# Math, Science, History,
unraveling the MYSTERY #
The Big Bang Theory Season 11, Episode 11
# Math, Science, History,
unraveling the MYSTERY #
The Big Bang Theory Season 11, Episode 17