Deeply funny and thoroughly entertaining, Helen Simpson's new book of short stories deals with - among other things - time and change. As they chart tantrums, funerals, pregnancy, war and love affairs, these stories unroll with piercing wit and sympathy. One woman finds grief for her lost lover is assuaged by involvement in some carpentry repair work. Another grows increasingly angry as the grim reaper scythes through her circle, with farcical and tragic results. Elsewhere, a foreign correspondent receives an unwanted ultimatum, a South London builder avenges the duping of his adored mother, and a chlorinated changing-room encounter brings about a much-needed break with the past. And in the title story, a circular walk on Hampstead Heath leads to revelations involving feats of memory, a Shakespearian heroine, crossword clues, nonagenarians, and new life.