It's a most compelling piece, and Judi Dench played it in London. The daughter was played by Tracy Pollan, Mrs. Michael J. Fox. Curiously, I don't remember McGoohan being it. Are you sure? Dana Ivey played the American (spy) neighbor. I forgot the others, and I can't find my playbill.
"I'm a comedian, but in my spare time, things bother me." Garry Shandling