How many movies have Betsy Jones-Moreland and Fred Steiner collaborated on?

They have worked on 8 movies together! Their first movie together was The St. Valentine's Day Massacre (1967) while their highest rated movie together was Perry Mason: The Case of the Silenced Singer (1990). They have not worked together since Perry Mason: The Case of the Telltale Talk Show Host (1993). They are most known for their crime films together.