The criminal decided to come clean.
Why don't you come clean and tell us your plans?
It's obvious you did it so you might as well come clean.
come clean(with sb)(about sth);make a full and honest confession
Chao Hsin-mei pressed the button to call the waiter to come clean up.
Now Waldemar, whyn't you come clean and tell him what's on your mind?
His white arm was roped with prominent veins, his finely made hands too stained ever to come clean.
