What is "two-way mirrors"

Usage examples of "two-way mirrors".

Czisman would have no idea he was being watched because the Bureau didn't use two-way mirrors in its interrogation rooms-the sort you see in urban police stations.

A lot of what looked like windows here are two-way mirrors where the people you're seeing can't see you.

All glass on the vehicle, including the windshield, was heavily tinted, but two large windows on the side, around which the mural wrapped, were so black that they had to be two-way mirrors disguised with a layer of tinted film on the exterior, making it impossible to see inside, but providing agents in the van—.

Bugged bedrooms, and two-way mirrors and group orgy, that sort of boyish amusement.

But Rawcliff knew that there would be other eyes watching them: closed circuit TV, two-way mirrors, hand-picked experts scrutinizing every face, every suspicious expression and mannerism.

White-coated interviewers grilled me in formal interviews in front of two-way mirrors.

This room was the same as the other, sans barred windows and two-way mirrors on the corridor wall.

The cameras were hidden behind a pair of two-way mirrors, often used in this particular establishment.