No. In the laws of fairness or natural justice at common law, there are those few occasions where, say in cross-examination, you're allowed to cross-examine the person who made the complaint. Ordinarily, if the facts can be found in ways other than through this direct accuser approach, then the principles of natural justice don't really require that. You could go after the person who made the accusation.
On May 12th, 2009. See this statement in context.