Filmsite review of the first film in the series with notes on the sequels and the radio series.

Roger Ebert's review of this classic film, together with short biographical information on the star William Powell.

Centerstage review of the first film in this series discussing the on-screen chemistry between William Powell and Myrna Loy.

Review of the fifth title in the series.

An illustrated page on the fictional detectives, covering all the films as well as television and radio versions.

Illustrated reviews of all six films.

Commentary by Roger Zotti on the fourth film with remarks on the entire series.

Reviews of the first film upon its re-release on DVD.