How many Robert Ludlum books have converted to Film/T.V?

Answer 1

According to www.imdb.com:

# The Chancellor Manuscript (2008) (announced) (novel)
# The Bourne Ultimatum (2007) (filming) (novel)

# Covert One: The Hades Factor (2006) (TV) (novel)
# The Bourne Supremacy (2004) (novel)
... aka Bourne Verschwörung, Die (Germany)
# The Bourne Identity (2002) (novel)
... aka Bourne Identität, Die (Germany)

# The Apocalypse Watch (1997) (TV) (novel)
... aka Robert Ludlum's The Apocalypse Watch (USA: complete title)

# The Bourne Identity (1988) (TV) (novel)
# The Holcroft Covenant (1985) (novel)
# The Osterman Weekend (1983) (novel)
... aka Mission CIA (Philippines: English title)

# "The Rhinemann Exchange" (1977) (mini) TV Series (novel)