I don't think that
qualifies as a MYSTERY.
The Big Bang Theory Season 7, Episode 3
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 5, Episode 20
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 5, Episode 11
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 5, Episode 19
# Math, Science, History,
unraveling the MYSTERY #
The Big Bang Theory Season 11, Episode 12