Just read the first of these two adventures from the 90s. I thought they might have been a warm-up for his Sally Lockhart stories – since they’re both set in the Victorian era – but most of those were written BEFORE this. Not as gripping as the Sally L stories, but then it’s comic rather than serious. And I’m never really gripped by comic stories. But the characters are fun and it is – as are all his books – wonderfully well written.