Plot, character, clear writing - what more could we want? - but hoping for a fitting conclusion

Muriel Spark's A Far Cry from Kensington (1988) - the title won't mean much to American readers, but in essence her narrator is a 50-something woman looking back on her youth (when she was in her 20s) living in the Kensington neighborhood (then a bit dowdy and unfashionable; not now!) and working in publishing and recognizing that she's come a long way since that time of life - is typical of MS's work as I know it: clear writing with little embellishment, a sharp wit, deft sketching of the secondary characters, and a driving plot. What more could you want? This novel tells of two crises that may or may not overlap and converge. The narrator, Mrs. Hawkins (a war widow; at this point - 1/4 through the book, we know nothing about her late husband nor her marriage - it's possible that the "Mrs" is a false ID) works for a publishing house that is failing, and in fact the co-owner is committing all sorts of bank fraud, for which he will eventually be convicted. He asks Mrs. Hawkins to cover for him regarding some forged signatures, which she declines. The other element: Mrs Hawkins lives in a small, cheap apartment complex - she gives us quick character sketches of most of the tenants, one of whom, a war refugee from Poland, receives an anonymous threatening letter. Mrs Hawkins makes it her business to try to track down the source of the letter; of course we are led to think that it may have come from her boss at the publishing house, as he's a known forger, but at this point we can see no possible motive for his writing such a note. This plot device - the anonymous threat and its effect - will remind readers of Spark's Memento Mori, which concerns death threats made to a # of people in the same social set. That book is often considered one of her best, though I remember be disappointed at the lack of conclusion - Spark never really solved her own mystery. I have higher hopes for Far Cry, but we'll see.