Finding old movie when I know only plot?

And, speaking of Armenians and grapes, one ep of the old TV program ‘Mannix,’ ‘Wine from These Grapes,’ dealt with the *Armenian-American detective helping out an Armenian-American attorney (named Colligan). Part of the plot dealt with workers in a vineyard.

*Mannix is probably an Irish name, but in some of the earliest episodes it was established that the character, like the actor, was of Armenian heritage. ‘Colligan’ was also a rather non-Armenian looking name, but so it goes. . . .

I had intended to come in here and tell the OP that the best way to find an old movie from a plot description was to ask in the SDMB, but since she hasn’t been here since 2003 when she asked this, and since NO ONE has come up with the movie, I guess that would be wrong. So, never mind. But, did the movie have zombies in it?