Wiktionary
came clean
vb. (en-simple pastcome clean)
Usage examples of "came clean".
It took Lee Atwater to be lying on his death bed before he finally came clean about all the cruel slander and such that he had heaped on the American public in order to further his and his parties cause.
Fitzroy came clean that Antha Mayfair had gone out of her mind and tried to scratch her own eyes out.
Fresh tears started, but this time the grief loosened and came clean.
Back to how I acquired these daughters who are my sisters, Justin: Having conferred, this gang of genetic pirates came clean and threw themselves on the mercy of the court.