Suspicion (German: Der Verdacht) is a detective novel by the Swiss writer Friedrich Dürrenmatt in 1950 featuring the Inspector Bärlach.

The person pictured is the German Dr. Nehle who carried out horrific experiments on prisoners in the concentration camp Stutthof near Gdańsk, including operating on patients without anesthesia.

Hungertobel explains that his colleague Fritz Emmenberger, who was in Chile and publishing medical articles from there during the war, closely resembles Dr. Nehle.

In the morning, Bärlach is convinced that Dr. Emmenberger, who is now the director of a famous private clinic for the rich and dying in Zurich, committed Nazi war crimes under the false name of Dr. Nehle.

He determines to sign himself into Emmenberger's clinic under the false name of Kramer in order to confirm his suspicions and put the suspect under pressure.