Dr Cellini investigates crimes, robbery and murder.  There are eleven titles in the series, written by John Creasey as Michael Halliday.  

The Doctor Cellini series was written under the pseudonym Michael Halliday for UK publication (1965–1975), and published under the pseudonym Jeremy York in the USA.

• Cunning as a Fox (1965)
• Wicked as the Devil (1966)
• Shy as a Serpent (1967)
• Cruel as a Cat (1968)
• Too Good to Be True (1969)
• A Period of Evil (1970 in UK, 1971 in US)
• As Lonely as the Damned (1971 in UK, 1972 in US)
• As Empty as Hate (1972)
• As Merry as Hell (1972 in UK, 1973 in US)
• This Man Did I Kill? (1974)
• The Man Who Was Not Himself (1975)