He thrives in the atmosphere of a family nest. ???I can???t work away from domestic stability,??? he once told me.) To revert to chronology: In 1960, the text of ???A Walk on the Water??? landed on the desk of Kenneth Ewing, the managing director of a newly formed script agency, which now represents such writers as Michael Frayn, Charles Wood, Adrian Mitchell, and Anthony (???Sleuth???) Shaffer.