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Wiktionary
hide in plain sight

vb. be unnoticeable, by staying visible in a setting that masks presence.

Wikipedia
Hide in Plain Sight

Hide in Plain Sight is a 1980 drama film directed by and starring James Caan with storyline based on an actual case from the files of New York attorney Salvatore R. Martoche who represented the real life Buffalo, New York, victim's suit to recover contact with his children estranged by the culpability of the new husband and government.

Usage examples of "hide in plain sight".

Prey animals cloak their individuality from the hunters, and hide in plain sight of them.

Ridgecats down from the mountains after sheep could hide in plain sight, and bear and wild boar were known to double back on their pursuers and lie in ambush.

He had sunk into the silence of eternity, trying to make this not happen, trying to hide in plain sight.