That said, it wasn't a bad musical. It just wasn't a good one either. I've not seen the movie, but the plot, as portrayed on stage, seemed to be promising material for a musical, with plenty of action and plenty of introspection. That there are romances and a happy ending doesn't hurt either. A bored housewife in New Jersey wistfully follows the exciting life of people who leave each other personal ads in the newspaper. One of those who does - and who received them - is Susan, a woman-of-the-world with few scruples. Over two eventful days, their lives become intertwined and swapped while mixed up in a jewellery heist.
The singing was solid. The staging was ingenious, with good use of multiple levels. The swimming pool was nicely done. The costuming was evocative although, as G. or H. said, it looked as if the people in N.J. were living in the early 70s, while those in NY were living in the '80s. The plot is set in '78 or '79. But I wasn't drawn in at all to the plot until over halfway through the first act. (C. observed that the musical began in the wrong place. The opening scene at the hair salon was distracting and not wholly relevant.) It all seemed entirely competent, but ultimately a musical co-existing with its music, rather than immersed in it.
Note: The theatre couldn't have been more than a third full, and this was technically opening week (although it's been in public rehearsals for several). We were moved to the central stalls from our original tickets up in the upper dress circle. If you want to see it - if you're a huge fan of the movie or Blondie, perhaps - go soon.