The MYSTERY continues.
The Big Bang Theory Season 7, Episode 17
♪ 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 11, Episode 10
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 7, Episode 22
But whoever
that MYSTERY man was,
The Big Bang Theory Season 5, Episode 15