Madness Rules

Madness Rules
Heinrich Gretler (left) as Constable Studer
Directed by	Leopold Lindtberg
Written by	Friedrich Glauser (novel) Leopold Lindtberg Alfred Neumann
Starring	Heinrich Gretler Heinz Woester Elisabeth Müller
Music by	Robert Blum
Cinematography	Emil Berna
Edited by	Hermann Haller
Production company	Praesens-Film
Distributed by	Praesens-Film
Release date	17 April 1947
Running time	113 minutes
Country	Switzerland
Language	Swiss German

Madness Rules (German: Matto regiert) is a 1947 Swiss crime film directed by Leopold Lindtberg and starring Heinrich Gretler, Heinz Woester and Elisabeth Müller. It is based on the 1936 novel of the same name by Friedrich Glauser. Lead actor Gretler reprised his role of the policeman Jakob Studer from the 1939 film Constable Studer, also adapted from a Glauser novel.

The film was shot between December 1946 and March 1947 at the Bellerive and Rosenhof Studios in Zurich with some location shooting around Königsfelden. The film cost around 395,000 Swiss Francs.

The police investigate the murder of the head of a mental hospital who had recently been in dispute with his colleague over their treatment of a young patient.