NightJack wasn't "forced" to abandon anonymity, he simply left sufficient clues for a journo to expose him.

The years he spent in Paris are scarcely a state secret, and if the boy's hair was not a sufficient clue, his mind control power makes his lineage abundantly clear.

The simple knowledge that there was such a switch must be sufficient clue to let him find it.

The announcement contained sufficient clues for alert journalists to guess Kelly's identity, and the Ministry of Defence confirmed the name when it was put to them.

He had been given sufficient clues to solve the puzzle, albeit the clues had been oblique enough to make it difficult.

However, the treasure had already been found by a tailor from Inverness, William Shaw, be-cause sufficient clues to its location were contained in the story itself.

The heat was a more than sufficient clue.

My reading has given me sufficient clues to prepare a search program.

I confess that the chip in the stonework was a sufficient clue to suggest the true solution, and that I blame myself for not having attained it sooner.

The general type of this vessel is sufficient clue, since I've no alibi for the time of the kidnapping.