The six-foot-three Landau distinguished himself with a more subtle charisma and command of his craft, emerging as a versatile journeyman TV actor in the 1950s and 1960s.
“It was quite a big risk in cinema at the time,” Landau told The Daily Telegraph in 2012.
Landau never fully capitalised on his renewed celebrity, and appeared in an uneven parade of films and TV shows.
He had developed a strong talent for observing people’s expressions and movements, as well as a flair for imitations and accents.