The Things We Do For Love by Imogen Parker
This is the second book of a trilogy about a fictional Dorset seaside town, Kingshaven. I saw the author speak at an event last year and bought the whole trilogy. They're great books - they read like a soap opera. Took a bit of getting used to the frequent changes of view point and very short scenes, but once you get into the book I rather liked this style.
The town hotel, the Palace, is run by the King family. They are like the British royal family in miniature, with parallel lives, and this of course gives you clues as to what will happen. The first book of the trilogy covered the 50s and 60s; this book covers the 70s and 80s, and I'm currently reading the third.
Like the best soap operas, it's impossible to summarise the plot in a few words so I'm not going to try. What I love most about this book is the sense of era you get - lots of little references to songs in the charts, fashions, world events. Brilliant.