Wiktionary
come forward
vb. 1 (&lit come forward English) 2 (context intransitive idiomatic English) To offer help or information (especially, about a crime).
WordNet
come forward
v. make oneself visible; take action; "Young people should step to the fore and help their peers" [syn: come to the fore, step forward, step up, step to the fore, come out]
Usage examples of "come forward".
Her gaze was unswerving as she watched him come forward, and when another bolt of blinding brightness seared a path across the ebony sky, her eyes flicked downward to his naked loins.