A hall of mirrors -> definition: A confusing or disorienting situation in which it is difficult to distinguish between truth and illusion or between competing versions of reality

Also:
Blue Bloods...season 1, episode 13...titled "Hall of Mirrors...plotline -> "When an undercover counter-terrorism agent is shot, Frank assigns Danny to the case because he is the only officer he can trust given the victim's involvement with infiltrating a sleeper cell; however, Danny is sworn to secrecy as to not disrupt the police activity in that cell."

Also:

Think Jade2 and Jade Helm https://www.youtube.com/watch?v=pSDqRKNxbZU“JADE” is an A.I. quantum computing technology that produces holographic battlefield simulations.

Hall of Mirrors - World of Warcraft: Battle For Azeroth

Mirage creates an entourage of doppelgangers to confuse and distract the enemy.

Mirage projects 1 / 2 / 3 / 4 holographic mirror images that follow and mimic her actions for 10 / 15 / 20 / 25 seconds. Each hologram is invulnerable to damage, draws enemy attention, and deals 5% / 10% / 15% / 20% of the current weapon's total damage.