In Saturday's installment of your comic strip, you're confronting Serra Carson, who has secretly been framing you.
"I must know -- what made you suspect me?" she says.
"You insisted I was innocent despite all the evidence against me!" you reply. "And when something seems too good to be true -- it usually isn't!"
Um, sorry to break it to you, O great web slinger, but methinks you're saying the opposite of what you really mean -- namely that if something seems too good to be true, it is too good to be true.
Your friendly neighborhood Syntax-Man