**Robert Culp, who paired with Bill Cosby in the US comedy-adventure TV series I Spy in the 1960s, has died at the age of 79.**Police said he accidentally hit his head while taking a walk outside his Hollywood home.
In I Spy Culp played an agent whose cover was a tennis ace, while Cosby played his trainer.
Culp was prominent on US TV from the late 1950s, more recently appearing on the sitcom Everybody Loves Raymond.