Well, okay, one MYSTERY solved.
The Big Bang Theory Season 6, Episode 8
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 7, Episode 23
So, if you want to solve
the MYSTERY of who stabbed
The Big Bang Theory Season 7, Episode 3
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 12, Episode 14
♪ Math, Science, History,
unraveling the MYSTERY ♪
The Big Bang Theory Season 12, Episode 16