
Maybe the spot's
the CLUE.
The Big Bang Theory Season 7, Episode 3

- What's that about?
- Not a CLUE.
The Big Bang Theory Season 2, Episode 15

- No.
- Not a CLUE.
The Big Bang Theory Season 4, Episode 19

What was your first CLUE?
The Big Bang Theory Season 1, Episode 14

There's got to be a CLUE
here somewhere.
The Big Bang Theory Season 12, Episode 2