Late Call (1975)

Four episodes on BBC2 in March 1975, adapted from Angus Wilson's 1964 novel. Dandy Nichols plays Sylvia Calvert, who retires after a lifetime of hotel service and moves with her husband into their widowed son's home in a new town. Potter took the novel's prologue, set in the hot summer of 1911, and made it the heart of the drama, cutting between that summer and the present. So even a faithful literary adaptation turns into one of his memory pieces. It is the quietest serial here, a good pick if you want to see how he worked on someone else's book.