The Invisible Visor was an East German television series, broadcast with long intervals between 1973 and 1979. In its first and longest season it starred Armin Mueller-Stahl in the role of Werner Bredebusch, a Stasi agent active abroad under the alias Achim Detjen.
A trio of taxi drivers working the night shift investigate a series of bizarre murders, kidnappings, and disappearances. Along the way, they keep encountering a mysterious glowing car known as the phantom taxi.
Attorney Ingo Lenssen and his team of investigators who specialize in sensitive cases involving clients who prefer private investigations to legal advice.