A good film

The book was good too. Only 163 pages. But a lot can happen on 163 pages. 

It's been 4 years since I read the book. I remembered how it started and how it ended.  In general I knew the in between, but not the details. Which is a good thing I think. Otherwise you tend to compare the book to the film constantly. It seems to me the events in the film were pretty accurate. 

So which other book by Penelope Fitzgerald should I read?