(1) There isn't a scintilla of evidence to prove it.
(2) He says there is "not a scintilla of evidence" to link him to any controversy.
(3) They had not found a scintilla of evidence against him.
(4) There is not a scintilla of truth in what she says.
(5) There's not a scintilla of truth in what he says.
(6) There's not a scintilla of evidence.
(7) Not a scintilla of evidence to prove it.
(8) Novelty ignites scintilla admittedly easily, novelty always also is the prelude of the distance.