When two friends inadvertantly discover that a famous neurologist, Doctor Givert, has been kidnapped, they begin investigating the case. The situation becomes complicated, however, when the protagonist can no longer trust anyone—including his friend—and decides to solve the case on his own.

Cuando dos amigos descubren por descuido que han secuestrado al doctor Givert, un famoso neurólogo, empiezan a investigar el caso. La situatión se complica, sin embargo, cuando el protagonista duda de todo y de todos—incluso de su amigo—y decide solucionar el caso por su cuenta.