Stuck in bottom left-hand corner. 27a Speculator in time before robbery having load of gold: ??e?r??? 15d Seek to keep old U.S. city unspoiled: i?v?o?a?? - inviolate? 24d Upset at most awkward situation: ?p?? 22d Old letters in English among works: r?n?? - thought maybe runic, but can't see why.