
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 12, Episode 19

♪ 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 18

♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 7, Episode 17